How to measure with an inside micrometer

Inside micrometers are not my favorite , but there is a place for them in the shop. We will demonstrate how they function and show some tips to get the best readings.

[@jaimevega4370]

Hi. I want to thank you for taking the time to share your knowledge and experience. I find your videos very instructive and you make them fun to watch. Thanks.

[@TheOkiepreppers]

Just received a set of these these, now I know how to use and calibrate them. Thanks Don!

[@turbocobra]

Great Tip Don! I subbed to you a couple weeks back and I have gone back and watched most of your videos. You have a really great way of explaining things. The history of your company is really cool, good to see you guys thriving, doing well, and producing great tools and online content for us less experienced to learn from!

[@SupremelyFly]

These don't look ideal but I'm glad you still made this video to expose us to this.

[@istvanmeissler2238]

Excellent video. I learned just what I needed to know. I so appreciate your time and effort educating those like myself new (relatively) to machining. Thank you very much.

[@SuburbanToolInc]

Great to hear, I'm glad I was able to help. Thanks for watching!

[@SlowEarl1]

Thanks for doing what you do.

[@Robonthemoor]

Great service you deliver.

[@mccullenj]

Really enjoying these videos. Learning a lot.

[@SuburbanToolInc]

McCullen Knives That's great , thanks for watching.

[@droppinlowlows7234]

I use an inside mic myself ...but that pistol loaded unit is awesome . Wish I had one. Love the video showed it to my wife so she could see , how I'd mics are not easy to use and take some experience.

[@paulbuckberry7683]

Hi Don, I really enjoy your short sharp video style. Amazing what you can learn in just a few minutes eh?PB UK

[@ke6bnl]

keep up the good work I am learning a lot.

[@edrozenberg]

Great information thanks! For sure there’s a huuuge price difference. A few hundred for micrometer set with extension tubes that goes from 50-300 or 50-500mm, vs. many thousands for a small set of 3-point handle snap inside mics that doesn’t even cover a very large range. For “normal people” either manual inside mics or a set of telescoping gauges is the way to go unless you’re only measuring a single ID all day long and only need to buy a single expensive gauge.

[@peckiledorf]

I'll check k ya later thanks a bunch I really appreciate the stuff ya do

[@MrPetarq]

Dear Mr. Bailey lovely video as always, thank you for your time and energy that you put in making them. Also i would like to ask are you doing in house thread grinding ? If yes, that could be very interesting to see. Best regards! :)

[@seanh303]

Good video. Thanks for taking the time.

[@SuburbanToolInc]

You're welcome! Thank you for watching

[@leonardduru8625]

thank you. this was helpful

[@toddlfrank]

Where I worked we always used outside mics to check them and used the graduation lines as reference marks.

[@tom87pate]

Thank you Mr. Bailey.

[@SuburbanToolInc]

You're welcome, thank you for watching

[@brownsshooting8499]

thanks for this video it answered all the question i had about my inside mics.

[@BasementShopGuy]

Don, I'm missing the banter that comes from the interplay with Glen!! Get that guy back from vacation already, LOL

[@stanleyg64]

I luved them inside mics but always checked the size with an external mic

[@peterspence5196]

Gday from down under, Calibration of our measuring equipment where I work is done by a company in Brisbane QLD. I have found errors in the outside mic's checking them to the standards that come with them. We use mainly "Mitutoyo" which is in my opinion - top shelf gear. Can the standards that come in the box be trusted? or should I trust the people that calibrate our mic's? they are not cheap to have done! I have my own personal mic's & look after my own & they seem to be more trustworthy! On a final note, I bought an older set of "Moore & Wright" depth mic's at a flea market, what is the best way to calibrate them? they are 50mm to 300mm I've had them for a long time & never done them. Cheers - Peter Spence.

[@marceltimmers1290]

Hi Sir. I have seen several of the people on youtube using those things, and by the time they got their measurement, you had to wake me up out of a deep coma. You can see them wrestling with those things with their big fingers into a small hole, and it takes hours. No I think those things have reached their expiration date. Marcel.

[@juliabentley2809]

Thank you. Now I know what that is.

[@SuburbanToolInc]

Thank you for watching!

[@Ronnie_Barber]

You should do a video on the difference between the rod style inside Mikes and tubular. Also you have all these videos on micrometers but none on how to calibrate them or take care of them. Just an idea, keep up the good work!

[@SuburbanToolInc]

This is a good idea! Thanks for sharing, I've made a note about it and we will consider it. Thanks again for watching!

[@johnjoines1732]

Thank you for explaining the use of this tool. Have you made a video on the proper use of angle blocks and their setup? Best wishes and please continue your wonderful series of videos. Respectfully, John

[@SuburbanToolInc]

John Joines John , are these the ones you are referring to? www.subtool.com/st/ab_angle_block_sets.html

[@johnjoines1732]

Yes sir. Thank you.

[@charlesmashanda1216]

What's the name of that gun like instrument? I need one

[@markrichardson239]

Don: Love your videos. Ok, I got started right. I went to work for Wagner Mining Equipment. We had a QC guy, he constantly walked around the shop, spot checking everyone's work. I said... " Don, here are my micrometers, you wanna set them for me?" He said... " I can't, you have to do that " It doesn't matter how hard you crank your micrometer. What matters is... can you do it the same way twice. I lent out my ID Mics to a local calibration company. In return, Clint calibrated them. I just laughed... I never even read the ID mics. I put them in my OD mics, and use that number. What if there was a dust mite under that 1/2" spacer? Just how fat is a dust mite, anyway??? \ Anyway, a couple threaded pointy sticks could replace any ID mic I own with a nut in the middle. Take them to the OD mic, and get the feel. Thanks again!!! Mark

[@crookedriver2079]

Don,Thanks for posting! Hey I think it would be a great idea if you could show people how to set a dial bore gage like a Mitutoyo 511 series and also dial split ball like a Starrett 82z series with gage blocks close to the bore size one is about to measure (also ring gages as well but remember not everyone can afford a bunch rings but they usually have gage blocks: at least a 36 piece if not an 82 piece set) Thanks for your consideration.

[@SuburbanToolInc]

We'll consider it, it's in our notes.

[@chmubashirchmubashir4024]

Good

[@gamingwithsachin8055]

sir how use pitch micrometer

[@MrShobar]

Don, you mentioned that the bore gage is expensive, and that is a limitation to be sure. What you failed to mention is that the bore gage also has a limited range of measurements. So, to duplicate the function of the bore mike, one would need a whole collection of bore gages. And some measurements simply would not be possible with bore gages (e.g., measurement of a 12 in. inside diameter). Great video, as usual my friend.

[@SuburbanToolInc]

MrShobar Good point , thanks for watching.

[@Sketch1994]

As I don't have the feel for ID mics yet (matter of fact I don't own an ID micrometer), I would go for the bore gauge every day. I even got bit by an ID micrometer I borrowed that had a pitch error as it was pressumably dropped. 3 point micrometers sound like a good choice but the price is kinda stingy...

[@kerblow2017]

Which one is more accurate?

[@vadlamudijayaram1307]

Super

[@drewjohnson4794]

That fancy 3 point gage is useless though if the print you are working from has a roundness callout of less than .0005".

[@markrichardson239]

Like you say... Don't even worry if your ID Mics are true. Get the feel, and put it in your OD mic, and take that number. My Metrologist borrowed my ID mics, and in return, he calibrated them. I just laughed. I don't even read the ID Mics. I don't care what they say. My OD Mic's are on.

[@crookedriver2079]

That's a good idea I never thought of that! Bravo! Thanks!

[@thundercuck1779]

The whole point of having it read true, is so you can practice with a calibrated ID mic to a setup ring, then practice for feel