On Fri, 10 Mar 2006 10:19:11 -0800, Jim Stewart
wrote:

I bought a set of inexpensive gauge blocks,
mostly to be able to check the accuracy of
my motley collection of calipers and mikes.

I spent about 2 hours cleaning the rust
preventive goop from them and then I went
over them with a rag wet with LPS. If I
keep them in the living area of my house,
is that sufficient protection to keep them
from rusting?

I noticed that in order to get them to wring
together, the surfaces had to be close to
perfectly clean. I assume they have to be
re-oiled after use.

Does anyone know what the accepted procedure
is for testing mikes and calipers? Some
sort of progression of blocks that serves
as a worst-case test?

FWIW, I was taught to apply "nose oil" to gage blocks before wringing.
Just rub a finger down your nose and smear a film on the blocks.
I was also told once that when clean blocks are wrung together the two
blocks actually share electrons which causes them to stick so well.
Not sure about that.
Randy Replogle
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Randy Replogle