On Thu, 19 Feb 2009 05:23:36 -0800 (PST), Jim Wilkins
wrote:

On Feb 18, 9:59=A0pm, wrote:
...It turns out that I
have a 30 tooth gear and a 32 tooth gear and that the ratio between
these gears, times 36 TPI, which my lathe does have, results in a
pitch only .0001 different than .75mm, calculated to 5 places. ...
Eric

Good idea.

My lathe's gearbox chart was missing so I made one up with a
spreadsheet. I changed a copy of it to show the metric modulus for
each pitch and experimented with gear ratio multipliers to get exact
values.

Jim Wilkins
Thanks. I hope it helps someone else out. Now that I figured that one
out I'm gonna try for some other common pitches.
ERS