Hey Rick,
""""""""I found an MOI script for involute gears, but it didn’t allow for specifying the pitch/module, so wasn’t useful.""""""""""""

There are 2 gear scripts. 1 allows you to choose Diametral pitch (SpurGearProfile) along with number of teeth.

There is also "Gear" which uses a "scale" function. It seems to relate to 10 = 1 pitch (So 20 equals .5 etc)

Both produce a pitch circle on commit...





I am a bit out of my element to discuss gears much further. I don't remember who created the scripts to ask about reference...

Maybe someone else can dissect the 2 and talk more about the difference...