While only one patent model for a protractor survives in the Smithsonian collections—from an inventor with a colorful personal history—several of the other objects also provide examples of technical ...

This isn't the same as the static measuring tool you might find in a school but rather is an electronic component that's surprisingly useful in the world of gaming. This Pi-powered protractor is ...

Image caption, The first sector to be drawn is to represent the friends who walk to school. This angle needs to be drawn at 160°. Position the protractor on top of the circle so that the origin ...

Yaluke has created a Raspberry Pi Pico-powered protractor that can be used to calculate rotation data for simulating steering wheels when driving.