Micrometer Care & Repair With Bob P3

The brass micrometer is revealed
Dial vernier strip down & assesment

[@MaturePatriot]

15 minutes fly by when you are enjoying what you are watching!! Very educational, and very entertaining! Thank you so much for the dismantlement demo!! Bob, you are a wonder! John, good on you for presenting these series with Bob!!

[@JamesDedmon]

I seen that years ago on calipers, the reason I have Starrett dial calipers is because the rack is on the top, just a better design. Brown and Sharp also is rugged and hold up well in the shop, because of having top racks. We used the B&S ones at Eaton. I own 2 sets of the Starrett dial calipers one was a flea market score and I use them in my home shop daily. The brass micrometers are awesome Bob does a heck of a job on those instruments.

[@nikond90ful1]

Thanks for the video John,Bob. A nice little series,. Very informative.

[@paulmorrey733]

Cheers Bob and John Great video

[@bostedtap8399]

Very interesting micrometer, certainly learned about explosive/anti-static safe ones.

[@britishreaction54]

Thanks for that, very informative.

[@gadget73]

I've been using a proper vernier on my lathe, the old kind with no dial or a rack. My cheap dial indicator never agrees with the micrometer, but the old vernier does.

[@pearcemachineshop5200]

She sure is purdy, nice job Bob, now I know how to get my callipers apart you’ve just cost me an ultrasonic tank. Alan.

[@joegil7757]

Thanks for the tutorial. Bob, what make/model ultrasonic cleaner are you using, thinking of getting one to cleane my mics and other parts.. Thanks in advance.

With measuring tools you only need them 100% accurate if you keep using different ones each time, if you use the same one for measuring each time then all parts will be out the same amount and will not matter so much. Obviously if you are machining for a business then 100% accuracy is a must and even then they say within 5 to 10 % accuracy.

[@aceroadholder2185]

I was never a great fan of dial verniers because of dirt getting into the rack while being used out in the shop and jumping a rack tooth at the worst possible time. They were fine in the inspection room where they could be kept clean. I have a German made dial vernier purchased in the 60s that has two hands so that the complete measurement can be read off the dial, so it has a bit of clockwork inside.

[@gazbopilot1]

Bob - enjoying the videos. just wanting to find out what the wax/paint markers you use to redo the scales? I have a M&W and 2 Slocombs which need doing, the M&W is ok with strong glasses on, but would like to black the scalesanyway - to help my old eyeballs, but without damaging the matte chrome finish. The slocombs however have polished steel thimbles, and not so easy to read, without waving them around to get the light right ! can't seem to find out online the best pens and methods of cleanup after application. cheers mate. keep em coming !

[@Sammus7t]

Can't answer for Bob, but he may be using a Lacquer-Stik. Markal might be the easiest brand to find at local suppliers, though there are others. Here's a link to Markal's website: markal.com/products/lacquer-stik

[@paintbox48]

Thanks for your videos, they helped me unseize a "new looking" micrometer I've just acquired. Mind you I did rip my thumb with the little pin spanner before I watched your vids! I had to revert to a pair of pliers to free up the spindle and collar. Maybe a silly question - but why do you have to use a standard, if it's the markings on the micrometer you use to measure an object?

[@doubleboost]

You need to calibrate the micrometre that is what the standard is used for

[@paintbox48]

​@@doubleboost Thanks for your quick reply - but if you set the micrometer to zero, even if the spindle and anvil faces have been damaged and reground reground, surely resetting everything to zero calibrates the micrometer? Or am I missing something?

[@paintbox48]

P.S. I find the actual lines on the micrometer a bit thick when expecting accurate alignment to thousands of an inch.

[@petegreen1667]

Hi john could you please ask bob what fluid he uses in his ultrasonic tank, thinking of getting one. Hope you are all well and thanks to you and bob for some great videos.

[@bobdixon6060]

hi I will get the name for you regards bob

[@bobdixon6060]

hi on eBay its named as oxidation and rust remover regards bob

[@frederickstidman1502]

Check your standard against an one inch standard. It would be an easy mistake to make.

[@bobdixon6060]

hi the mic is mm and the standard is not inch it undersize for inch

[@britishreaction54]

The standard in the micrometer case was smaller. If it was an inch standard it would have been bigger.

[@beehivepud]

Bob, Is it possible to replace the glass on a digital micrometer (Moore and Wright 6")

[@bobdixon6060]

hi I have dune cheaper ones but not moore and wright

[@beehivepud]

@@bobdixon6060 Thanks Bob, I dropped mine a few weeks ago and can't find any advice on how to swap the glass. If you fancy a challenge then I'm up for it

[@bobdixon6060]

@@beehivepud hi just get in touch with john for my info

[@user-ks5ff]

Wipe your hands before using, put it back in it's case after, you'll never have a problem, if you treat a delicate measuring tools like shite of course you'll have problems, luckily the high prices of good quality dial calipers makes even the biggest moron think twice about abusing them.