How to “0” threading micrometer.

[DngBat7]

How do I go about “zeroing” or calibrating my screw thread micrometer when both anvils are adjustable? I have the little Mitutoyo gauge it came with that pointy on one side and v shape on the other, but you have to center it by eye, and I know that’s not the most accurate way. It’s a 1-2” digital screw thread mic.
Thanks

 

[Tucker65]

If it's a digital micrometer I would say insert the set of anvils needed for the thread pitch you are measuring. Turn the thimble into the anvils centering them up the best you can. You might have a friction thimble or have to rely on your feel but once set on the standard you should be able to zero the digital micrometer at that point.

 

[Dusty Stevens]

You zero it as you drag the standard thru at the resistance you want to feel, so like when you measure threads you put the v shape on the thread then run the pointy thing across the other side. Do the same thing with the standard

 

[DngBat7]

Thanks Dusty and tucker

 

[Dusty Stevens]

So like any mic you zero it to your feel and style of measurement. If you just crank it down on a standard but measure threads with a slip its not zeroed

 

[DngBat7]

So like any mic you zero it to your feel and style of measurement. If you just crank it down on a standard but measure threads with a slip its not zeroed

Just struggling a little with the standard for the threading mic. A little more difficult to get the feel for me.

 

[Dusty Stevens]

Keep at it. Maybe put the mic in a vise and try

 

[DaveTooley]

I get it. Three hands are better than two.