Mechanical Drawings for SQ-5 baseplates - Dimensions for rack mount

Hi,

I’m crafting a a rack mount for the SQ-5, where it sits on top of the rack mounts, rather than being sunk into it. (It’s going on the top of a rack)

Are there any mechanical drawings, or just the accurate dimensions for the current rack mount screw hole. I’d just like to make a template.

Yes, I could measure it myself, but wanted to see if there was something officially available.

Thanks.