Modular Synth Panels

Hey all-
Is there a spec for MOTM panels. Other than the obvious size, is there
a standard for different dimensions like pot/jack spacing, legend
font/size, mounting holes?

I've ordered up a bunch on MOTM modules, and I'd like to convert the
old stuff I have residing in cardboard boxes, butter tubs, etc. to
MOTM. I'd like to get drawing and building now as it will be several
weeks before I have my hands on a module to measure.

Thanks,
mrmike