Ruler marking gauge | RulER

Ruler marking gauge | RulER

By tightening the side knob, the ruler skew is eliminated, so the play gaied by the constant use can be compensated.

for 20mm width rulers.

IMPORTANT  |  the threading need to be very precise so print with adaptive layers, to gain details while optimizing printing time (or if you are lazy :) print everithing at 0.15mm). The thickness of the ruler is 0.7mm, you'll need some sanding to have a nice fit without play.