On 2010-10-12, Doug White wrote:
"Michael Koblic" wrote in
:


"Doug White" wrote in message
. ..

[ ... ]

I like the caliper idea. I'm not sure I have one of each, and my
recollection is the one(s?) I have are fairly large. The pocket was
narrow & shallow, so it might have been a bit tricky to fit an inside
one down in the pocket. I've used telescoping gages in the past, but
the pocket was definitely too small in this case.

Would even these be too small?

http://www.use-enco.com/CGI/INSRIT?P...950942&PARTPG=
INLMK3

The smallest of these might just work, and I'd forgotten that I had a
similar set. Thanks for the reminder!

I prefer the ones which are flat bottomed starting at the
equator. Easier to measure shallow grooves. The best ones I have
are an old Lufkin set. Everyone else has more meat on the underside of
the equator.

And you never actually said how small the pocket needed to be.
That might have changed quite a few of the answers. If it was too small
for the telescoping gauges, but would likely work with the smallest of
the small hole gauges, it is pretty small, and I would likely not have
suggested the calipers.

Enjoy,
DoN.

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