Shop Talk 10: Telescope Gages & How They're Used

In this episode of shop talk I go over telescope gages and how I use them. I share my techniques on how I pull them from a bore, hold them for measuring, and them using a mic over them.

[@kurtarmbrust]

Your humble nature makes you a much better teacher. Thanks for showing the techniques you use.

[@joepie221]

Hi Adam. You covered a bunch of very small details that will all make a difference in the end. This instrument is certainly an acquired feel. They can be very accurate. Personally, I like the single sided models. One thing I'd like to contribute is to always keep the rigid barrel down towards the ways of the machine. This keeps the weight of the instrument from influencing the measurement it delivers. Good video. Thumbs up.

[@Abom79]

Thanks Joe. I have always set the moving leg downward. It's what I'm used to and works well for me.

[@joepie221]

Like they say, 10 machinists will do the same job 10 different ways. So long as the final product meets the print. Thanks for the reply.

[@davidrahn9903]

Thanks a ton Adam. I've never had good luck with my grandfather's set of telescope guages but I just went out to my shop and got 6 consistent reading with them using your method. Thanks a bunch.

[@Abom79]

+David Rahn (Dmrahn) That's awesome! Keep practicing what I mentioned, getting the screw just tight enough to hold the arms, and feeling the tips touch the mic.

[@tracylemme1375]

Everybody has their own method for using telescoping gages. I have my own and I use it all the time. I always get good results. Thanks for showing the world these tricks that you have learned one way or another.

[@StreuB1]

Great video Adam! Good to drive home the idea that if you use the ratchet or friction thimble, you WILL push the plunger into the gauge several thousandths. Those that say they have no problem with that, overtighten the telescope gauge and when you do that, it draws the moving leg inwards a few thou as well. So you end up with a measurement thats sometimes 5 thou smaller than the part really is.

[@Abom79]

+Brian Streufert Your exactly right. It's the right way to do that, but I'm not one to argue with people. I show what I know, and that's it.

[@matman7546]

I have seen people just put it in the bore, snap it open and pull it out without even putting it at an angle and rocking it. Literally just snap it and then tighten it and pull it out. Then crank down on it with a mic haha.

[@demonknight7965]

your way of holding and using the telescope gauges makes sense it gives it support and lots of accuracy. the way you handle your mic is a technique I have seen befote

[@joneseyjones9374]

Thanks a bunch Adam, watch your channel all the time. Really good information on telescope gauges. Look forward to see more of your shop talk on other instruments. Keep up the good work, Brent.

[@tacitus101010]

Thanks for taking the time to go into such detail. Really helpful and informative.

[@stevewylie5086]

Use the ratchet / Don't use the ratchet whatever you are comfortable and consistant with. The ratchet is on the barrel on a lot of newer digital mics and they do save trying to use 3 hands.Good vid as usual Adam.

[@MacroMachines]

I have that exact same starret set and never knew how to use them till now!

[@Abom79]

+RealSteel 1776 Now it's time to get practicing measuring holes!

[@johnstark6535]

Thank you for this video and a different perspective. I’m still a student now for industrial engineering technology and I’m in Metrology now. We just had a discussion about them. I was wondering if you could show a video on how to use longer set micrometers too the feel for those is a little tricky too. Thank you again.

[@bhavarkumavat3202]

That's the first time I had seen a Telescopic Gauge. Thanks

[@mountainface8808]

thanks for the info, im reletively new to machining, seems logical and that you would be able to get a pretty accurate reading, Ill try your technique you've obviously been doing this for a while I don't know why anyone would argue, some people are not open minded enough. and their way is the only way

[@horneygeorgeforge7079]

thank you for sharing! all these things comes in handy especially for this newbie.

[@philzail2532]

I think Starettes are the best! And I use the 2 side. And I agree those aren't what I'd call a snap gauge. IMO dial bore gauges are snap gauges, spring loaded.

[@NathanCEnyart]

Outstanding lesson

[@j4k3z]

Excellent explanation. Thank you I really appreciate how thorough and easy to listen to and understand you are. Confident yet humble as well! I wish every how to video were done like this here. I feel like people making a how-to video often forget they're talking to people with probably 0 experience in the topic at hand and fail to mention important things they may do subconsciously or by muscle memory that have an important impact on a newbie being able to duplicate their technique. One question I do have though, i know you said not to tighten the locking screw too tight, is that so the rods still have enough slack to contract if you aren't quite square in the bore, but enough bite to hold the minimal measurement reached that? At which point exactly in the process are you tightening the locking screw? I don't know how a set of quality telescopic gauges feel but I'm using a cheap set from Harbor Freight and there's a lot of roughness feeling when the rods slide which my guess is just lack of refinement or rough edges from the manufacturing process so I couldn't help but take them apart and do some light sanding in an attempt to make them function a bit more smoothly so I can use them similar to the way my question explains.

[@hebrewhammer1000]

Thank you for sharing your technique!Great video. it'd be interesting to see a video on Precision levels

[@matman7546]

Same way I do it. Good practice for a beginner is to get a ring gauge or something else with a known accurate I.d, and keep doing it until you can repeat your measurement within a few ten thousandths

[@matman7546]

And a calibrated mic of course

[@ChunkyMonkaayyy]

Good advice. I worked at a machine shop in HS, and spent first three or four months in the tool room checking measurements on literally everything in there. I must've mic'ed a thousand end mills. Also countless gauges, blocks, pins, etc. Mastered mic's, but I gotta say I fell in love with calipers. I used them like 90% of the time after that. Way faster and I was dead accurate with 'em.

[@marklowe7431]

I've worked in computing 30 years and over that time people comment on how smart you must be to work with computers. Engineering like this to me is clever guys. Building a lot of the stuff over time 'without' computers and just plain talent is smart. Much respect to you guys who can do this kind of work. My grandfather was a machinist and I really regret not learning from him before he passed.

[@tsstsstsstsstsstss]

Thanks Adam! I just picked up a set of telescope gauges this summer to practice on, perfect timing for this video. I guess one could tighten the gauges extra after they've been taken out of the bore before measuring them? (Though that would most likely cause them to move and affect the measurement)

[@peticiclo]

Fantástico! esto es una excelente información, gracias!!!

[@greasydot]

Awesome explanation. It is all about repetitive tension and muscle memory. Thanks for sharing.

[@tny-]

yep, adam's great at verbalizing this stuff. i see it the same way as he does about the friction and like you said, muscle memory. same as making automotive valve adjustments with feeler gauges in my opinion, you have your personal "feel" for how much friction is right and you're going to be consistent with practice.

[@greasydot]

Wish I had a nickel for every valve I have adjusted. Sure enough a feel for that. Needed three hands sometimes.

[@jameshatfield7634]

Thanks Adam :I've been doing that the same exact way for the last 50 years

[@hardwareful]

Well said, Adam. The only way to learn something is to have a proper method to check your results, be it the statistical way by judging repeatability or, eliminating possible systematic errors, by measuring known OD and ID. Their insisting on a certain method only shows their lack of methodology. A question like, I see you've got an interesting measuring technique - how does that work to give accurate results, would've been more appropriate. Next time you can just forward them to this video. Now I want a set of telescoping gauges, too. ps. I don't mean to imply they are wrong in what they do. On that length scale everything has a noticable springiness to it and soft surfaces can be flattened so the ratchet knob is just the design intention how to achieve repeatable torque on the screw. But on a more abstract level the repeatability and absolute accuracy of the process is what counts. Any way to do it that delivers on these requirements is equally acceptable. Overriding this argument with the authority of the design intent is what I refer to above. Sometimes it's difficult to stand up for your own way of doing things, sometimes people who derive their opinions from authority are misled.

[@Abom79]

Your right, they could have approached the topic differently, but I'm sure they had confidence in there own practice. I proved mine with my work.

[@bostarbird5282]

Awesome video.

[@thatlittleworkshop]

Hi Adam, That was probably the best demonstration and explanation of telescope gauges that I have ever heard. Great job. I also rely on mine on a daily basis. What I found great for practising is high quality bearings, so you always have a known reference to compare your measurements to. Thanks again for all your excellent videos.

[@howder1951]

"You're doing that all wrong!" I think you'll get one of those at every shop you visit. I think the guy that said that to you should get an Abom79 security poster just for the nerve to say that to you. Good video Adam, interesting, because I had never considered the one leg gauges before, but just one less thing to bump when you are measuring, cheers!

[@shanel4348]

Straight out of machining school and into a job shop/electric motor repair shop, this really helps me. I struggled with telescoping gauges for a bit, but this video really cleared it up. I'm getting consistent readings now. Thanks!

[@Abom79]

Great to hear! 👍🏻

[@MultiChaga]

That was clear...Thanks.

[@chicagolathe-shopmaster-sh1680]

Hey Adam, Do you ever use a micrometer holder rather than holding by hand? I broke my right arm years ago and don't have good feel in my hand, so I keep my mic in the holder because it's easier to do the measurements for me.

[@arnodyck]

Thanks for showing that. I'll be sure to keep this lesson in mind when taking measurements in the future. I didn't have anyone to show me how to use a telescopic gauge. What I did was take multiple measurements to see if the measurement was repeatable. I relied on the consistency to give an indication of the accuracy.

[@BuildSomthingCool]

I like how you let the gage fall into your hand. :-)

[@apistosig4173]

yeah - a flawless technique

[@MrMa1981]

I have, to me, an important question: when I calibrate the micrometer I use the friction (like everybody I guess), and the calibration bar is thigtly held. So, why with the telescope gages the right way is the "touch feeling"? If I do the same when I'm calibrating the mic, I have 2 - 3 cent of difference (.0015" circa) I'm sorry for my english I'm italian. Thanks.

[@turbocobra]

Very helpful Adam, thanks for sharing.

[@gilbertodiazcastro8871]

Great video as always. Your method was taught to me in High School and has proven accurate for over 37 years. Great explanation and accurate to boot. Keep up the good work.

[@emiliog.4432]

Thanks for showing your technique. I'll have to try it. Have you considered using a mic stand? (I use the large Mitutuyo mic stand).

[@nitehawk1224]

Thank you for the excellent demonstration Adam. Just one question, is it good practice to leave the gages under tension when they are stored?

[@8MADJACK]

I just like to say thank you for the videos you put out and some of the other guys on KZbin as well. I'm self taught so that obviously means I didn't have anybody show me how to use some of these tools and the best thing about these modern times as I can get info from guys like you!

[@spagamoto]

These are my favorite episodes. I've imitated your technique for a while, nice to hear it laid out in words.

[@josephfalletta9853]

Adam, I love the videos, thanks for making these! I'm hoping you could talk a little about morse tapers and the different adapters and ways to hold tools.

[@moms762]

Explained very well, and helpful. Maybe you should start a Tips and Tricks segment.

[@JohnBare747]

I figure the proof is in the pudding as they say, if everything fits you must be doing something right.

[@matthewtroiano3024]

I have a technique similar to yours I also give it a side to side wiggle very lightly. Kinda like to make sure it is centered before I sung then tilt out. What I want to know what is a good set to buy I intend to use it to measure engine cylinder bores. Starrett, mitutoyo, and brown and sharp come to mind right away. I want accuracy but really durability. I may be able to get accurate out of a HF set but for how long? I do want a good dial bore gauge to and the same question applies. How ever a dial bore gauge will not fit in the cam journal on a motorcycle.

[@elmarqo_3448]

thnx Adam. I've learned a lot watchin you n Tom n Kieth.

[@Phantomthecat]

Thanks for that Adam, I've just bought myself a set and I'm still learning to get consistent measurements. I'll take some of these tips and keep practicing. :)

[@Abom79]

+Phantomthecat Good deal, just keep practicing and you'll get it!

[@powerq21]

Thank you Adam, very informative and easy to follow. I'm slowly working my way through all your videos and am learning a lot from them - I feel like I'm doing an apprenticeship with you!

[@mainesailah]

Thanks Adam. I remember back to some of your first videos showing you using the telescoping gauges. I adopted your technique and it's been very helpful in getting consistent readings.

[@Bookerb2004]

One of the first videos of you using this tool I noticed how deliberate that motion was, repeatable & accurate

[@theslimeylimey]

I think where a lot of people go wrong is trying to center the unlocked gage perfectly perpendicular to the bore, lock it and then try and tilt and extract it. This had never worked reliably for me when i started out so I soon figured out a method similar to Adam. The key is to purposely snug it up past perpendicular so when you do the tilt to extract you travel _through_ the point of perfect perpendicularity. The dragging of the leg(s) in the bore automatically positions the gage tips exactly at the full diameter (center) of the bore because they naturally want to move to that spot as its the path of least resistance.

[@Abom79]

Your right, and that's something I kind of missed when explaining. I always try to get as much info as I can out to the viewer, but I always miss something.....😣

[@coldformer1]

well said

[@princebatswater]

That was a great explanation. Do you have a metric set?

[@Abom79]

Yep, I keep them next to the metric adjustable wrenches.

[@mountainface8808]

lol

[@WCGwkf]

Lmao

[@templer4295]

The gages in the blue organizer is Brown and Sharp

[@outsidescrewball]

Great lesson! Thank you! So many times(not knowing the correct method) I would close down the micrometer and collapse the telescope gage and never get a consistent reading....and say to myself...WTF!....

[@Abom79]

The more you know......Thanks Chuck and I hope some of my tips may help you out

[@matthansen736]

as a former tool maker I agree with your technique 100%great videos always look forward to watch them

[@hettinger1000]

Thanks Adam, there's no substitute for the kind of experience and communication skills that you have. I can see your confidence affecting a whole bunch of us amateurs that watch every week.

[@RalfyCustoms]

Thanks for sharing Adam, very well explained buddy

[@MultiMachinist]

Another excellent shop talk Adam. We mostly use bore gages in work for measuring but I always run a telescoping gage in there just to see the difference. I'm usually within a tenth or so every time so there's no doubt with the right feel they are accurate. Thanks again for all the great content!

[@Phantom0309]

surely the inaccuracy comes from using a flat tip on the end of the gauge to measure a concave surface unless the gauge has the same radius as the bore being measured?

[@Abom79]

+Phantom309 they aren't flat.

[@Phantom0309]

if the radius on the gauge is smaller than the bore radius then youll be fine i guess

[@Abom79]

They are all deigned with a radius on the tips and hey will clear the smallest bore size for each gage. You can also see that when it's being swung across the mic faces.

[@Phantom0309]

Thanks! that clears that's up, my bad

[@analog56x]

i have a set of dual piston telescoping gauges that were passed down to me when my Grandpa passed away. I just sat down with them, and one of my micrometers and got a consistent reading 4x in a row on a part that i bored. I love your videos man, they are helping me so much! thanks to you, i have identified all of the tools in the toolbox that my Grandpa collected over the years. when I first started turning on the lathe, i couldnt identify probably about 70% of the tools in the box haha! Thank you Adam!

[@allthegearnoidea6752]

I have just started machining as a hobby and would like to see more measuring videos from you. I bought some cheap Chinese telescope gauges but they did not work well for me. I ended up buying some made by Starrett and although the finish is much meter not had much luck with them either. I think it’s just a matter of practice for me. I have just bought a internal micrometer and a depth micrometer and will be doing an unboxing video and try to figure out how to work them. I would love to know your secrets to get male parts to fit female etc and how to achieve sliding or press fits. I always end up,with a sloppy fit. Loving the channel Adam. Thanks for your hard work. Regards Chris

[@templer4295]

Adam..thanks for going over this subject...great help!

[@ChefBartDudewiththeFood]

Hey Adam. It's been a while but I had a couple comments. Normally after I would use the telescoping gauge and take it out of the bore I would go ahead and tighten it a little more. This way there would be no chance of collapsing it when I would use the mic. The other thing I would do prior is to take a standard and put the mic on it so I can get the correct feel and come up with the same number as the standard on the mic. I guess this would be done for people learning how to get the feel of the mic. The last reason is I always used the same measuring tool to measure the outside of what was going to be pressed into the bore. If you use the mic to measure both you can apply the same pressure to get a reading. My first mic's didn't have friction symbols so I never grew up feeling comfortable using them. Even when I got mic's later on that had the friction thimble I just couldn't get used to it. I always felt that the thimble was too far away from my hand and I would as you do use my pointing finger to turn the barrel. Whenever I had a large bore and didn't have a telescoping gauge, I would use an inside mic. I don't know if it was just my set but they seem to have a lot of friction when you are trying to adjust them. anyway I would then go ahead and measure that with an outside mic. Keep up the good work. I really enjoy watching your videos. Like I have said to you before , since I don't spend much time in the shop anymore because I am too busy with my job as an electrician, it feels like I am in the shop again when I watch. Although I still get the urge machine everyday. You always have it in your blood. When I measure stuff as an electrician I think of it in thousandths. Then I have to keep reminding myself that I need to back off on the tolerances. It is really easy for me to go plus or minus 1/16 on conduit spacing... etc.

[@SynchroScore]

All kinds of different ways to do things. For instance, I find it easier to mount the micrometer in one of those little benchtop holders, to better align the gauge within it. Doesn't mean you're wrong, of course. I'd say that many of those who don't think telescoping gauges are accurate aren't using them with enough care.

[@bcbloc02]

Good tips! That is very close to how I do it and feel is a big factor.

[@caerleon87]

I do it similar, but different!! DEFINITELY "top and bottom" as you say, as otherwise gravity pulling the thing down could well mean that you were not measuring the largest diameter of the bore. I set the gauge slightly bigger than the bore, lock it down, stick it in the hole top and bottom as you say, then "wiggle" the handle to and fro [so that the measuring points rotate] This helps them "walk" to the largest bit of the bore while at the same time pulling down exactly the same as you do.. Works perfect everytime. It helps if there is cutting lube in the bore too.. As to the micrometer, exactly the same as you do it. NEVER use the ratchet, they are mostly FAR too stiff. Besides when you do it by feel, at the same time as you are feeling for the size, you are feeling for the largest diameter. You cannot do this by just screwing down the ratchet like a "G" clamp!! [Are they called "C" clamps in the USA???]

[@WCGwkf]

There's one person where I work that likes to set a mic zero where you have to queeze down on it instead of feeling it or using the ratchet. I think that's just straight up wrong, otherwise do it how you'd like. In my work setting, if I'm finishing a bore I prefer sunnen dial bore gages, and roughing I'll use the 3 leg inside mics. With the sunnen gauges my technique is prectically identical to how you use your telescope gauge but I don't drop it after. I personally prefer friction or ratchet over just feeling it to reduce human error as much as possible, but I don't use them much at work anymore. The accuracy that I work with, I only use a lasermike for 10 mil readings.

[@sparkyprojects]

I totally understand how telescope gauges work when there's 2 legs, but how about a 3 leg one as seen in this video at 3 mins in kzbin.info/www/bejne/boHQfaOsdtaXgNU

[@thomream1888]

So wait. You mean I can't just watch a couple KZbin videos on open-heart surgery and be good enough? Uh-oh, Gramma gonna be pissed at this delay. She didn't complain none about them false teeth I made her. 'Course we just thought it was senility that got her to mumbling so much. But it really did cut down on arguments at Thanksgiving Dinner! Just wait till the ol lady here's we gotta practice that "Venus Butterfly" thing from the "special" video we got down in Mexico. Whoo doggy!

[@tomclark6271]

I really like MOST of your vids Adam... Except the foodie ones. Well, of course I like those too, but I gain too much weight just watching them... torture! I've never trusted the friction or ratchet type mics. I know that Mr. Starrett, Brown and Sharpe and General What's-his-name had the best of intentions when they tried to provide a method of repeatability, but i find them only useful for rapid adjustment of the mic. On the othe hand, there is a point to be made about how easy it is to apply way too much pressure to the anvil, distorting the frame, and invalidating the cert. Have you ever seen a laser photo or digital stress analysis of a 1-2 "standard grade" mic as thimble pressure is applied? (google it) The torque multiplication of that 40tpi screw is amazing [100x psi resultant pressure]. No wonder that it can easily distort the frame. Your are totally right about how a properly used telescopic gauge (as you demonstrated) can conform to within microns of an i.d. in the machine shop. The problem comes when measuring the gauge. Sure, mic's are convenient and able to show .001" tolerance of repeatable accuracy, that's why use them. But, there are more accurate yet time consuming methods of measurement. But that accuracy and repeatability comes from the machinist. That's why I love the trade... Lord knows it isn't job security or the money.

[@tomclark6271]

I really like MOST of your vids Adam... Except the foodie ones. Well, of course I like those too, but I gain too much weight just watching them... torture! I've never trusted the friction or ratchet type mics. I know that Mr. Starrett, Brown and Sharpe and General What's-his-name had the best of intentions when they tried to provide a method of repeatability, but i find them only useful for rapid adjustment of the mic. On the othe hand, there is a point to be made about how easy it is to apply way too much pressure to the anvil, distorting the frame, and invalidating the cert. Have you ever seen a laser photo or digital stress analysis of a 1-2 "standard grade" mic as thimble pressure is applied? (google it) The torque multiplication of that 40tpi screw is amazing [100x psi resultant pressure]. No wonder that it can easily distort the frame. Your are totally right about how a properly used telescopic gauge (as you demonstrated) can conform to within microns of an i.d. in the machine shop. The problem comes when measuring the gauge. Sure, mic's are convenient and able to show .001" tolerance of repeatable accuracy, that's why use them. But, there are more accurate yet time consuming methods of measurement. But that accuracy and repeatability comes from the machinist. That's why I love the trade... Lord knows it isn't job security or the money.

[@PeterWMeek]

Getting an accurate absolute measurement requires that all of your steps work together. The micrometer has to "push" on the snap gauge at about the same pressure as the snap gauge pushed outwards on the test piece, and the micrometer has to have been adjusted to read accurately at about the same pressure. My micrometers have all been adjusted to read accurately at a bit lighter pressure than the ratchet applies. (I don't use the ratchet.) If someone uses my mikes _with_ the ratchet, they will get a reading a few tenths smaller than I get (and a few tenths smaller than they would read using a mike adjusted to read accurately using the ratchet). In the end it has to be what works for you. As you said, "Did you ever have to send something back to me because I measured it wrong?"

[@Factory400]

While I believe these instruments can be accurate - the reality is that they require a 'feel' like you said. This, in my opinion, kills them for use in my shop. I cannot rely on extremely subtle feel to make the final calls on tight tolerance bores. The trilobe bore guages are really expensive - but everyone in my shop can get an accurate measurement with only a modest bit of training.

[@chucktipton9596]

Great stuff Adam. How about demonstrating the use of a vernier protractor like the Starrett C359. I have one and it is always seems cumbersome to use.

[@gh778jk]

There is definitively some 'art' to using these gauges... Personally I like using the ratchet on a micrometer, as it is suppose to give you the correct pressure every time. I do find a micrometer stand handy for measuring a telescoping gauge, especially for the bigger sizes (50 mm and up) For a quick and 'dirty' bore measurement, don't forget the adjustable parallel ! A cheapo set of those, where the top and bottom are ground to a knife edge really work very well ! Cheers Paddy

[@joeystrittmatter6890]

Hey Adam I strongly believe that if you know how to use telescope Gage's correctly as you can they are a great and very precise measurement tool I just recently finished a job for Goddard where to bore was +.0005. -.0000 and I hit my mark and I was getting within.0002 for what the cmm was reading

[@donpollard9460]

I like your reasoning behind measuring vertically: gravity will have some effect (not much, SOME effect) on a horizontal reading - sag in the telescope being the main effect; now, if you are using a micrometer to measure the 'length', the effect of the sag is greater than the accuracy of the mike. It could be vice versa, but there WILL be a lessening of the accuracy obtained by the mike.

[@johs290185]

Pretty neat to see how those are used. Where i work we only use the 3 point type inside micrometers. So never actually tried to use a telescope gage before. Out of curiosity, if you have a bore that is not completely round, oval shaped almost. How would you takle that? I work with CNC lathes and it can happen easily if you overtigthen the part, it can get a bit distorted, but that's with hydralic chucks. I guess you got more of a feel to it, so might not happen to you. I don't have much experience with manual machines so I apologize if that was a silly question. I do try to learn though and you are an excellent teacher, keep up the good work! :)

[@gibbsey9579]

Good tips Adam. Could you also include how to read a vernier. I have a beautiful twelve inch Mitutoyo with a fine adjustment screw, but I can't read the bloody thing....Thanks. Ken

[@forrestaddy9644]

Good video. I been at it for over 50 years and used pretty much Adam's method. If my reccommendation carries any weight you noobs looking for the how-to on the use of telescope gages might take a lesson from Adam before you try anyone else's. Do it right according to your ergonomics and you'll be able to take temperature corrected ID readings consistent to a few ten-thousandths of an inch. Practice, practice, practice is your path to accuracy and consistency. Ball bearing inner races are typically ground to a few ten-thousandth tolerance. Find a few of different sizes and practice with telescope gages on them in the comfort of your recliner during commercials. Practice those precision techniques. There's no point in spending hours making a part measuring it with tools you've never used before.

[@thetoecutter13]

I'm always correcting people when they call it a snap gauge... A snap gauge is a totally different instrument. Maybe I'm a stickler for proper terminology, but someday you might work in a shop that uses actual snap gauges and some confusion could arise. Thanks for a great video Adam!

[@code3responsevideos872]

It would be nice to do a vid on indicator snugs, rods, and clamps. It is hard to try and piece something together as noob.

[@peterspence8759]

G'day Adam,I am going to forward an argument defending "Mitutoyo" telescoping gauges, I have found over the years that the square at the end of the handle in between the double telescoping end on my Mitutoyo's is a very handy feature for measuring say, the width of a keyway. By holding the gauge down with the tip of your finger on the square keeps the gauge perfectly horizontal with the bottom of the keyway & you can then sweep the gauge from side to side while your finger keeps the gauge perfectly flat & you still get the same feel as long as you don't push too hard with your fingertip.I'm sure that's why Mitutoyo make them that way. I believe Mitutoyo have put more thought into their design! That's why I believe Mitutoyo measuring equiptment is by far the best money can buy...

[@wags9777]

I have a set of the 229 snap gauges that need to be cleaned. After taking a part I realized there's what looks like a collet holding the upper pin. They are slightly different than the gages that extend in both directions. You should show how yours come apart so I'll know how mine comes apart. Thank you

[@immolationangel4124]

Everyone has their own way of using precision measuring tools. My old QC guy and I had very different ways of gauging parts and always came out .001 different on our measurements regardless of which tool we used, or the method we used for each tool. I have since learned, that even though tools like calipers and telescoping gauges are intended for rough dimensions, if used properly, they give the exact same reading as a micrometer. It was ingrained in me to think my old boss would never get an accurate reading on a micrometer because he never used the ratchet stop. Turns out he could, and with much more reliability than with it. I ended up picking up a feel for not using the ratchet stop because of it; even though "improper" it works astonishingly well once you get the feel for it. I can't say I've ever seen a telescoping gauge used the way you use it, but hey, if it works it works; and it was interesting to see a different method than what i'm used to.

[@firstmkb]

Adam, it's sad that you had to preemptively defend your technique to a KZbin audience when you have decades of experience and professional success. I can picture tens of thousands of critics commenting on everything you do, and wouldn't wish that on anyone. You do great work, and I pay attention to anyone with a micrometer showing that much wear from use.

[@lucky2653]

I've been machining for 30 years now. I wouldn't trust a snap gage for anything closer than .0005 thousandths. Good for most things but certainly not the most accurate way to measure bores.

[@tbrforge1]

would like to see you work with an interrupted cut, I have a part that is 5" long with a 3" square bottom about .75" and the rest of length is turned to a 2.6" dia. Would really like to know how you would approach the job....

[@jimwright2795]

A question about the shapes of the 'business ends' of these two instruments: I know that the ends of the mic's anvil and spindle are flat. It would seem that the ends of the telescope gauges would/should be convex, or at least rounded a bit cause inside a tube yo. I didn't see that addressed nor a close-enough shot in the vid. Secondly, 'splain Lucy the mechanics of how the telescope arms "?lock?" into position having found the desired position within said tube. Thanks in advance and peace out.

[@JMKady76]

It's funny, in the automotive world it gets beat into people's heads (Including some instructors that I have a lot of respect for) that telescoping gauges are inaccurate. Period, we're more or less told to never use them because they aren't accurate enough for internal engine work. Then you're handed a dial bore gauge and you can let 5 different guys use it and they'll still come up with 5 different measurements same as they did with a t-gauge.

[@africanelectron751]

Certainly has a place, but I see them used in mass production in the hands of button pushers it's simply too prone to human error, it's basically two instruments to measure one dimension and something about that freaks me out.

[@overkillaudioinc]

Very interesting. I would have guessed that you put the fixed part on the bottom and the plunger part on top! Hmmm Interesting

[@robertboyette8161]

Hey Adam, as an idea for a future video can you give us your take on buttress threading. I had to cut one recently and with very little useful info out there I just basically made it up as I went along. I know you run into this at your job and any advice on technique would be greatly appreciated. thanks

[@yonycone]

Hi Aron greetings from Argentina very good your videos even if you could not understand much I'd appreciate captioning now I'm writing with a translator jajajaj

[@RickRose]

Thanks Adam for such an in-depth explanation. The method I developed was to tighten down after pulling the gauge out so that the mic would not compress the gauge, then use the ratchet. That's just what I came up with, lacking anyone to show me differently. I'm not all that confident in my accuracy, and I should probably do as some suggest here and find some samples with a known ID.

[@Abom79]

Rick thats a great suggestion. Get something you know what the ID and is practice, maybe with some of the tips I give on how I use them

[@tolydukhovny682]

dear adam, usually such techniques demonstration -- in the very depth -- is reserved for the first-born favorite son! i very much appreciate your showing them to us. thanks for the video, -toly

[@Abom79]

Thank Toly...lucky for me, I was the first born son.

[@yqwgjsg]

Need some more of those bad assed shirts with your silhouette on them. I have had more questions and comments about mine since I started wearing it. Everyone thinks it's a WWF wrestler LOL

[@gordonsmith8400]

Hi Adam, nice video I am not a machinist but a mechanic and I think a lot has to do with experience which you can't learn in a classroom. you have to get out there and learn like you say you're own way but accurate way and what works for. I have also had people say the book says do it this way but it's not the only way, results is what matters. Thanks again mate

[@Bookerb2004]

I do like how that just Drops, I have no other reference as too what Technique is best, I'm sure the YT Subs will Chime in, lord help meh

[@lucky2653]

Here's a tip that you didn't mention. Something I learned along the way. You can put a drop of oil on the tips of your gage for smoother feel. It's usually not needed but there are materials that it works good on like cast iron.

[@chennemeyer]

Very nice, thank you for this new series of "how I do it" series, its great