Dave explained :
andrew wrote:
Dave wrote:

Harry Bloomfield wrote:
on 30/01/2010, Dave supposed :
Harry Bloomfield wrote:
Long shot I know, but...

I have an old Moore & Wright micrometer, which needs a little
adjustment to get the zero accurate and maybe strip down for a clean,
unfortunately it came without the little spanner. It is a little over
2" long, with a C at one end, an open ender at the other and I
understand it is standard spanner for all models. I wonder if anyone
might have one surplus to their needs?
You don't need it for a strip down and clean, but can't you make
something that will let you adjust it? It's only a pin on an arc.

Dave
I have already tried to make one - it just wasn't strong enough to budge
it.
Yes, they are quite stiff to move.

I've had mine for 40 years and the supplied spanners never did undo the two
lock rings, so I've always allowed for the offset.

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. As I wrote earlier, they are very stiff to move.

Harry, do you have a kitchen strap wrench? That might be worth looking at,
they are very cheap.

I was going to 'make' one (just a bit of cord and a nail) to try
turning the barrel, but I do also need to strip it down to give it a
good clean and lub.. The only thing which is out, is the course
calibration along the barrel - the zero mark is about 7 thou out. The
fine calibration is spot on. I rather suspected that turning the barrel
would set up both the course and fine calibration marks.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk