[Shop-talk] Micrometers

[Joe Szwed]

>By the way, what are you using for you "standard" for inside measurements?
>I can see how gage blocks would be used for determining the accuracy of
outside
>and depth measuring tools but do not see a way to use them for testing the
>accuracy of  inside measuring tools. Several kludges come to mind but I
though
>I would as someone with more experience than I.

In the absence of ring gauges one way is to set an outside mike to a certain
size, then measure between the mike jaws.

Joe Szwed