This is my one and only youtube comment. I just started my HET apprenticeship this week and we are currently going over micrometers. The course material had left me pretty confused as did a few other videos I watched. After watching this, I feel like have a good basis of understanding. Thank you for this. You have made a difference in my life.
Thank you sir I've been amazing all my life and just recently been employed at a machine shop and I'm using a micrometer at my station you have been so helpful thank you
I purchased an old Starett micrometer with the removable anvils, allowing it to go from 0-4” I was surprised to see it didn’t have a vernier scale, so I can’t read any ten thousandths! All my other mic’s have it..
The ratchet is there to ensure the mic is tightened (but not over-tightened) by the same amount every use. When you're talking about ten-thousandths of an inch, different users of the tool who tighten the thimble to different levels could get different results, especially if the material being measured is soft, like plastic.
GREAT video!! How would you set a .0001" micrometer to a dimension of 2.0783, for example? I set the barrel to .0750" Thimble rotated where the 3 is on the main horizontal line of the barrel, which is .003" Now I have it set to .0780" How would you set the next .0003 on the veneer scale when any line on the thimble can be lined up against the veneer? From what I can tell, keeping the thimble right on the .0003 marking, the thimble marking 9 would the logical number to align with the 3 on the veneer scale. Would it be correct to assume lining up the 9 on the thimble with the 3 on the veneer would achieve the desired additional .0003"? And to achieve 2.0786", putting the micrometer back on the .003", I would need to align the 12 of the thimble with the 6 of the veneer?
To set that ten-thousandths on the veneer, look only at the veneer number. Set 0.0780 as you described, then open *slightly* the mic until a mark on the thimble aligns with the 3 on the veneer. Double check your measurement after that. Avoid looking at the number on the thimble when reading the veneer, because that will change depending on the mic position. In your situation, I think the thimble number would be 6 (not 9) that aligns with the 3 on the veneer when setting it at 0.0783. To set it at 0.0786, yes, it's the 12 that aligns with 6. But the thimble readings will be different at different settings, so try not to pay too much attention to that. Hope that helps.
You are right! It's very complicated because is Inches system! The metric system is way better, easy going and has more accuracy! The entire world is using metric system since decades ago and only North America still using inches that goes against the international ISO system.
I don't know why anyone would have huge problems with this.. I figured out how to read a mic sitting on the floor of a tool room after being told to measure all the drills and sort them using a mic.. I had never touched one before, wasn't hard to figure out however...
