Staedtler 12-Inches Engineers Triangular Scale (98718-34BK)

12-Inch triangular scales are ideal for engineers and engineering students, Three sides with six different scales feature die-engraved graduations, Easy-to-read, printed graduations will not rub off, Color-coded grooves allow quick and accurate selection of the desired scale, Engineer triangular scales are fully divided: 10, 20, 30, 40, 50, 60 parts to the inch. Scales are made of high-impact polystyrene plastic