On Fri, 9 Oct 2009 17:39:53 +0100, AdeV
wrote:

AdeV may or may not have intoned:

...as it read 0.096" for one complete turn ...
...A second turn yielded 0.184"

Duh, brain fart. 0.192" for 2nd rev, 0.288" 3rd, and so on.

No idea where .184" came from

Are you sure the scale is perfectly parallel to the ways? A 2 degree
mounting error would explain the discrepancy.

BTW, I've used several identical-looking scales from www.shars.com
with no problems (even after calibrating their length with a hacksaw)
other than the cheap batteries supplied.
http://www.shars.com/products/view/2..._Machine_Scale

--
Ned Simmons