Micrometer calibration question

[lxt123]

Do you calibrate your micrometer?

How?

[Paul80]

Assuming it's a standard analogue micrometer then yes as and when required but its not really calibrating, just setting the zero position as once zero is set it should be accurate all through the range, as long as its not worn out or damaged.

Just make sure both measuring faces are clean then close them together, you should be able to feel when they close and are clean, then check its showing zero, if not use the supplied adjusting spanner, looks like a small C spanner supplied with all micrometers when new, the move the barrel until its shows zero is aligned, repeat and check its now aligned, if not repeat until it is.

It's easier to do than write instruction for.  Fortunately

 

[HectorLooi]

Check out the above video. But as Paul says, you can only set the zero and check that it's accurate.