A small model of a commonly-sold 5V relay block to use when laying out electronics bays and the like. Not really intended for printing, rather to use as a guide for mounting hole placement and height clearance etc.
It's as accurate (+/-0.05mm) as I could get it by hand/verniers.
Couldn't find a version of this anywhere so made it for myself but might be useful to somebody else.
These are sold under the brand ‘Keyestudio’ at Jaycar stores in Australia but I wouldn't be surprised if they're retailed under many different names - if you know one, drop a comment and I'll add it to the tags.
The author marked this model as their own original creation.