Job Shop Measuring & Metrology Tips with Mitutoyo!

Measuring Tool and Metrology Do's & Don't in the Machine Shop!

Thanks to Mitutoyo for co-hosting the video!

Interested in Metrology? Be sure to check out:

[ACota-dkqw]

2 years later and this video is still great! Thanks John and Mitutoyo!

[seraphim]

I use Mitutoyo Micrometers and Calipers everyday. They are my personal tools and I make my living with them. Thank you, Mitutoyo, for making excellent tools.

[Attoparsec]

The notch on the end of the caliper bar is to let you measure depth even when there is a slight radius at the bottom of a hole. Source: A friend of mine in R&D at Mitutoyo.

[oxtoolco]

Hey John,

Congratulations you are heading into the very interesting world of metrology. Your ability to make things is directly related to your ability to measure them. So your measuring has to be better than your manufacturing abilities.

On your gage blocks. There are wringing films on the gage block surfaces. These can contribute significantly to total gage block stack errors if not done correctly. In fact the published length of a gage block includes one wringing film as if it was wrung to a measuring platen.

"Metrology, Its a dirty business" (Oxtool quote)

Talk to you soon,

Tom

[MaxMakerChannel]

My metrology professor told us rule number 1: Don't trust the salespeople when buying equipment.
But these are all good tips.

[markobutter]

Thanks, would be great to hear from a carbide insert company about different grades and coatings.

[VolkCNC]

On the topic of metrology and gravity, I once worked on a part for a hydro electric dam. It had a 24 foot inside diameter that needed to be measured with an inside micrometer. In order to compensate for the sag of the bar micrometer, it was calibrated on a laser setting device while being held only on each end of the bar. When measuring, the guy on each end had to hold the micrometer in the same spots the calibrating machine held it. Temperature differential between the part and measuring device also became a big factor.

[stephanebeauchamp-kiss]

I always heard "measure twice, cut once". Which is great. But then a machinist colleague told me "cut twice and it's still too short"...that definitely changed the way I think about metrology.

[derinteriors]

John, This was an awesome video. Special thanks to you and Mitutoyo for sharing all the info. There is so much to learn about metrology but so little information like this out there. Keep it coming.

[ROBRENZ]

Very nice video John, keep them coming! Your shop is really looking good. Thanks for mentioning my channel it is greatly appreciated.
ATB, Robin

[weldmachine]

Best part about your channel John, is you having people dropping in to show there wares or you visiting other shop to get ideas of how they operate.
These types of video, s is why it, s worth watching.
Thanks for the video.
Regards Peter.

[joemodjeski]

Loved the gravity demo. I blew an entire Saturday chasing a few thou lost to gravity. Your *click* moment was way more exciting than mine!

[josefrefusesgo]

John I just got up and went and opened ALL my thimbles and caliper jaws Thanks so much for the tips and all that you do for us out here in youtube class!

[mattskolnik]

Hey John, I have to say, as a novice machinist and master machine tech, your videos are the reason i am doing this(i.e. Becoming a micron quality cnc machinist). As always a pleasure:) Thanks!

[michaelrizun]

Love the information and videos. Always learn something, even after 20 plus years of machining.
Wish this video showed a more close up and detailed view of the measuring techniques you use.
Thank you, and I appreciate your time and effort explaining difficulties and solutions to what seem like easy answers.
I'll stay tuned for more knowledge and help you provide.
Thanks again,
Michael

[andyclarke]

Brilliant video. Loved the gravity demo. Thanks

[mauriciopadilla]

Great video John. That setup to show how gravity affects and pulls on the holder was awesome. Very informative video. Hope to see more like this

[M-Tec]

I've got a 0-1" Quantumike and I later bought a 1-2" Quantumike. I love them both but find I don't need to use the 1-2" one nearly as often. To get consistent results you still need to develop a feel for the speed and force you use to close them even with the clutch. I also have a Mitutoyo 6" caliper that I carry around with me most of the day. I recently got one of Shars Aventor calipers for home and I'm really impressed with it for the price.

[tomr]

Excellent presentation. This is the education revolution.

[prodesign]

Awesome vid. I used mics when I was a noob machinist in the 90's and I use calipers all the time at work for modeling things but this video was a nice reminder of the correct way to have repeat-ability. LOL, why do I love this stuff so much? Damn right I want to see more.