Check the listing for details. Triangular Measure Scale Ruler 1:20, 1:25, 1:50, 1:75, 1:100, 1:125 2PCS. Color: Yellow, Red, Green, White, Black, Condition: New. Listed at 16.31 USD. Description: Professional Plastic Triangular Scale Ruler 1:20, 1:25, 1:50, 1:75, 1:100, 1:125. Made of plastic material with black letter printed, white triangular scale ruler. Plastic scale ruler with triangular body for safer cutting and scoring of materials. Three sides with six different scales feature die-engraved graduations and allow precision drawing for architects, engineers and carpenters. Concave base reduces smearing when drawing. Clearly marked metric graduations. Easy-to-read printed graduations will not rub off. Ideal for Plan Drawers, Architects, Workshop, Toolbox, Home Crafts, Hobbyists, Modellers, Draughtsman, Joiners, Cabinet Makers, Cardmaking , Graphic Designers, etc.