His build [PDF] is fairly straightforward: a high-resolution digital servo rests inside the bevel protractor while a motorized potentiometer, accelerometer, and µOLED display form the calipers.

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They’re selling prints for $26 now, if you’re looking for a gift for the carpentry or optical-bevel protractor enthusiast in your life. More deals, reviews, and buying guides Breakthroughs ...

Carpenters, plumbers, roofers and other tradesmen looking for an all in one measuring, combination square with bevel, protractor digital level and speed square carpentry tool may be interested in ...