Mauser Caliper Graduations.

[carl blum]

Hi Gang: Someone in the Unimat Lathe group has a Mauser Caliper and wanted to know how to read it. The front was easy enough, the top scale read to 1/64" and the bottom scale read to 0.01mm. The mystery was on the back, there is this odd progression of numbers and lines about every 3mm. It runs like this: 0, 0.005, 0.024, 0.055, 0.098, 0.154, 0.222, 0.0302, 0.395, 0.499, 0.617, 0.746, 0.888, 1.042 and it goes on. A friend said they form a geometric progression whose formula is x = 0.006194 n² - 0.003 where n are positive integers. But we still don't know what the scale can measure. It doesn't seem to be area of a circle. Any ideas?


Thanks, Carl.