This is a beam compass, a device for drawing or dividing large circles.
It is designed to fit an aluminium u channel extrusion of 10mm x 20mm.
In addition to the extrusion, you will need 3 M5 bolts and nuts for each trammel
BeamKnob.stl | 427.7KB | |
Beam_Compass.stl | 212.8KB | |
ClampKnob.stl | 630.6KB |