From: Robert Bastow <"teenut"@ hotmail.com>
Newsgroups: rec.crafts.metalworking
Subject: Re: setting a micrometer
Date: Wed, 08 Mar 2000 10:33:31 GMT

The Micrometer barrel is a simple press fit in the sleeve..no locknuts involved.

Set the mic to your "feel", on the standard and lock the spindle.  Take your cee
spanner and gently twist the barrel until the zero lines line up.  Direction is
kinda counter-intuitive..so don't be surprised, or alarmed. if you turn it the
wrong way at first (I always do!!) If this happens, or if you overshoot..simply
turn it back a bit.

NOW!!

Put the mic down and let it cool down to ambient temperature before re-checking
the zero and tweaking again.  The mic WILL have expanded from your hot, sweaty
little hands..so don't rush it and get a false reading.

teenut (Who did TEN of them yesterday!!)


Zebee Johnstone wrote:

> So.. I have my shiny new micrometers. Made in China but a reasonable
> brand name and claimed to be to their standards and QC, so
> I'm willing to trust.
>
> The set of 4 came with 3 bits of metal, labeled with sizes,
> I presume these are to test and set the mikes up.
>
> So I take one - the 25mm - and insert it into the 0-25mm mike.
>
> twirl the ratchet thingy on the end of the mike till it goes
> clickclickclick and...
>
> It's reading 25.02
>
> So I presume I have to set it somehow, how?  There's a hole in the shaft
> you turn that matches a little c-spanner, and the ratchet thingy has
> a slot in the end, so I think there has to be some kind of adjustment
> but what?
>
> How do I set this thing up?  I'm understandably reluctant to
> go diving in without some clue!

From: Ted Edwards <Ted_E@bc.sympatico.ca>
Newsgroups: rec.crafts.metalworking
Subject: Re: setting a micrometer
Date: Wed, 08 Mar 2000 08:14:31 -0500

One thing I haven't seen mentioned amongst all the good advice is CLEAN
CLEAN CLEAN!  It only takes a tiny piece of crud to put you off thou not
tenths.  Clean any oil or grease off the anvils with a bit of solvent on
a rag then gently close the mic on a piece of writing paper and pull the
paper through the anvils for an inch or so.  Do not pull the paper right
through as you are then likely to pick up fibers from the edge.

Ted