"Frank Erskine" wrote in message
...
On Sun, 31 Jan 2010 16:50:38 +0000, Dave
wrote:


What you wrote prompted to get mine out, micrometer, that is :-)

It doesn't have two lock rings, just an adjuster to take out the
backlash in the screw thread and the ability to rotate the fixed barrel
that has the 1/10000 vernier scale on it.

I think you probably mean 1/1000...

:-)

--
Frank Erskine

A M&W Micrometer can (optionally) have an additional vernier scale around
the sleeve to enable you to estimate 10,000 of an inch.