Dual Protractor

Dual Protractor (also can be used as a Square, Edge Line Marker, and Centre Finder)

This is an extremely simple yet handy marking tool. Its main purpose is to find or transfer angle markings…. but it can do a whole bunch more! See Images below and in listing photos for it's other tool uses.

As per my other tool models, this design had to be:

• fully 3D printable
• versatile and with decent resolution & accuracy for the degree scales.
• Robust! and so able to stand to a workshop environment

This model is the result & I am really pleased with how it turned out. It feels super sturdy and has a very satisfying sliding action.

Zero support required, and as mentioned, no need for metal fasteners as the securing bolt & slide nut are printed too.

For better accuracy, I have opted for minimal clearances on the sliding guide rails, so once assembled it may be necessary to rotate the plates around their travel range to bed them in. In testing mine have all worked straight away, but this should nock off any blobs etc. that may be in the grooves.   

I hope this increases measuring / marking bliss for you like it has me!