Just curious, do you use the micrometer ratchet (or friction thimble)
Friction thimble always, consistant, same as Charlie, always measures
the same on gage blocks.
OT where the heck is the "master machinist / cad-cam guru" when these
polls are taken, does he know what a mic looks like, (without a video
Depends on weather or not the mic has such a device on it. I don't
usually use the rachets -- they seem to get a little tight on the work.
The friction thimble on the Uni-mike is indispenable.
My very first mic, a Starrett 1 inch 436 plain-Jane, is still my favorite
mic after 46 years. And it passes inspection every year.
I find a plain spindle does it for me. The reason I like it is because
it's easier to tell if I'm square to the piece I'm measuring. If I am
square the spindle stops dead! Then I back off and let my finger and
thumb do the fine slipping. I can also more easily feel any debris if
it's in the way.
If you clamp up on a part and the friction spindle slips, you think
your are done. However if you're not actually square to the part
you'll get a miss reading.
When measuring you want to find the actual size. So just closing to a
"touch" is what you are after, as opposed to a torque reading.
Those are my reasons.
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