3 ms·

I think it’s part of surveying equipment for a construction site.

• bee_rider 3y ago
  For some reason that was what my mind jumped to, but the details seem odd. Apparently some were notched between the knobs, so it seems useful for measuring… and you could imagine eyeballing lots of angles by lining up the knobs in various ways. Maybe even putting a string across some knobs and looking through the hole. But why holes of all different sizes? And it seems weirdly difficult to make a right angle.
  • jmpman 3y ago
    I need to 3D print one to mess around with.