Micrometer holder

[SVcummins]

Picked up a third hand sure makes it nice to get consistent readings

 

[Phil Tibbetts]

Don't think
i would be clamping my micrometers in a vice. IMO

 

[Butch(OH)]

Yup, do it all the time when using a mic to set up my bore guages. I pad the jaws with a rag and use good judgement on the vise handle,, which I am certain you do also.

 

[timcasbolt]

(quoted from post at 06:13:18 05/19/21) Don't think
i would be clamping my micrometers in a vice. IMO

icrometer vises like that are very common in industry. Makes it a lot easier to get an accurate measurement when you've got a wire leading back to the computer hanging off the mic.

 

[teddy52food]

Be CAREFUL with that!

 

[SVcummins]

Its really really nice. The vice jaws are smooth so they dont mar it at all

 

[dr sportster]

I have a plastic vise for that.

 

[pete 23]

I think I would check the micrometer with a standard before and after clamping it in a vise. I bought a 25 mm micrometer from Snap On years ago. Figured it would be fairly good quality at $80 .

Just holding it in my hands for a while and it will change the zero. My $10 one inch micrometer I bought from Sears and just throw it in the pickup door pocket holds a zero better. You just never know about them if you need precision accuracy.

 

[Janicholson]

90% of accurate measuring is in the feel of the tool to the surfaces being assessed. Moving a part around to get it flat between the spindle and anvil in a vice is far less easy to feel than the micrometer in the hand. The Fowler brand uses plastic buffers between the heat of a hand and the tool body. (it measures to 5 decimal places in inches! and 3 in metric. crooking one's little finger in the opening and using the thumb and first to spin the thimble is the way I was taught. Jim

 

[timcasbolt]

(quoted from post at 06:13:18 05/19/21) Don't think
i would be clamping my micrometers in a vice. IMO

ere are some images from google of micrometer stands: https://www.google.com/search?sxsrf=ALeKk01mnG9L9mYQTvWDti4rJwD6kLhBCg:1621467828234&source=univ&tbm=isch&q=micrometer+stand&client=firefox-b-1-d&sa=X&ved=2ahUKEwiP-qmv9tbwAhUlAp0JHa0WAbcQjJkEegQIBhAB&biw=1600&bih=758

 

[pete 23]

Jim, I agree 100 % . Just like the little ratchet knob on some micrometers. I was taught , back in '55 that was for amateurs. You have to get the feel.

 

[SVcummins]

This one also has plastic insulation. I Agree when you are measuring the crankshaft itself but when you are trying to juggle the bore gauge and a 3 inch micrometer and get a decent reading its about impossible I could come up with 5 thousandths difference every time now I can repeat the results every time

 

[SVcummins]

I zero then every tine I use them

 

[SVcummins]

Please show us you holding a 3 inch micrometer in one hand a bore gauge in the other and turn the knob and show a consistent reading every time

 

[SVcummins]

I bought a second set of standards just because I really didnt like the feel of the ones that came with the micrometers.

 

[Janicholson]

I found this illustration of a nice big micrometer being held for measurement. I have a bore gauge for cylinders that has calibration standards in the box. Our 15 C micrometers are held with 2 hands because the things we measure don't move. one of my jobe is to teach engineers to accurately measure to .0005. I do realize the need to hold some instruments with a third hand clamp. No issue with me. Jim
Fowler bore gauge

 

[SVcummins]

I had thought of getting that style of bore gauge but then I sill needed micrometers for other jobs so I got the other kind of bore gauge

 

[Drew]

Are you talking about a dial bore gauge or a telescoping gauge?

If you are talking about a telescoping gauge, that's easy to hold the mic in one hand and run the gauge thru with the other. If you are talking about setting up a bore gauge with a micrometer, that is more difficult but doable. When I did it that way, I set the bore gauge so the end was hanging off the end of the counter and then used 2 hands to hold each end of the gauge to the micrometer. Since then, we have gauge blocks to set bore gauges up and I'll never set up a bore gauge with a micrometer ever again!! Gauge blocks are 100x easier and more accurate to boot. I've seen a micrometer move .0005 just flipping the lock on (Mitutoyo micrometers, not Harbor Fright crap).

 

[pete 23]

Holy cow, just saying what I was taught and the way I did it. My days of feeling a micrometer are long past. Sorry if I offended you.

 

[BarryfromIA]

Manufacturing would be nowhere if every production measurement had to wait for a vise holder and a ratchet turn of the mike spindle. That's ok for inspection rooms but manufacturing requires a one hand mike reading on most parts.

 

[timcasbolt]

(quoted from post at 09:49:58 05/21/21) Manufacturing would be nowhere if every production measurement had to wait for a vise holder and a ratchet turn of the mike spindle. That's ok for inspection rooms but manufacturing requires a one hand mike reading on most parts.

didn't make up what I said. We first started putting mikes on stands in 94, and it wasn't new then. There are still plenty of measurements made the old-fashioned way, but on dimensions designated for spc analysis, you want the mic on a stand with one wire going to the computer and another wire going to a foot pedal. Just because you haven't heard of it doesn't mean it isn't so.