3D Carpenter multi-angle square. Has markings for every 5 and 10mm. It's small and compact, very easy to print.

Completely designed for 3D printing, requires no supports. It's such a multifunctional tool, sooner or later it will come handy :)

What to use it for?

Use it as a simple square for 90 and 45 degree, for inner and outer corners.

Use it to scribe lines, holes are set at 5mm intervals.

Use it to mark two sides of the wood,metal etc.

Use it as a circular saw guide to cut perfect 90 and 45 degree cuts.