Mitutoyo Micrometer Adjustment

[ddickey]

Does anyone know how to adjust/cal this micrometer? Or if it's even possible?

 

[Boswell]

I think you just close it all the way and press "Origin". Not sure if you need to hold it in for a few seconds to set it as the default Origin.

 

[ddickey]

Yes you push the button twice. But it's out a couple tenths and I want to calibrate it.
One option I guess is to set the origin off from the closed position.

 

[Boswell]

are you saying that when you push the origin button it does not read Zero? or that when you compare the readings from this micrometer to another micrometer, the readings differ?

 

[ddickey]

Readings differ. Used two other mics and and a digital indicator.

 

[pdentrem]

We send those that fail the standards to the repair depot. $ will be spent.
Pierre

 

[ddickey]

Okay so there is probably no way to adjust.

 

[darkzero]

I've never taken apart any of my Mitu digital mics, I have always just zero'd them with a standard & they've been fine. But maybe try adjusting the split nut for the spindle threads? If loose it would create backlash & possibly inaccurate measurements. My vernier mics have them, not sure about digitals but I would think so? Or maybe the threads just need a cleaning?

 

[Dabbler]

To get the readings correct, you also might need to adjust the analog dials on the right. there is included a wrench in the box for this purpose. Youtube videos are best for this, rather than try to describe in text...

 

[ddickey]

Yes the dial is adjusted but made no difference in the digital read out.
Not sure about the split nut.