Clear Yellow Metric Parallel Multi-purpose Drawing Rolling Ruler
This Rolling Ruler is a drawing tool for making parallel lines, hatching etc. Also featuring a 180 degree protractor, it is transparent. Measure in inches and centimeters and draw quadrants, squares circles, angles, crosshatching, and vertical and horizontal parallel lines quickly and easily. Functions as a compass, horizontal ruler, straightedge, protractor, circle template and angle template, all in one.