A typical European protractor. A triangle ruler or geometry set square drafting triangle. It combines a ruler, set square and triangle in one instrument.
Length of the hypotenuse: 160 mm.
Scale of the tool fits to Unity units when you assume the usual 1 unit = 1 meter.
Added support for URP and HDRP. The package includes separate Unity packages for Built-in, URP, and HDRP.