Are you tired of measuring doors with a tape measure? Don't want to buy an expensive door-hanger's gauge tool? Then I have just the thing. Remixed from rb's left-handed ruler, this tool is designed to quickly and accurately check door thickness and the backset for your door knob.

PLA+ Recommended

Print in either orientation, it may need greater tolerance on the dovetail if printed flat to account for the droop in the joint. The one I printed flat didn't snap when bent to failure, the dovetail simply came loose. Printed vertically, no post-processing was needed and the joint is even stronger.