Ideal for professional and student architects. White, solid plastic. Die-engraved graduations. Colour-coded grooves. 12" tri-scale. 10, 20, 30, 40, 50, 60. 12" triangular scale in Staedtler's professional series is ideal for engineers. Color-coded grooves in the high-impact polystyrene ensure quick and accurate selection of the desired scale. Three sides with six different scales feature die-engraved graduations. Engineer triangular scale is fully divided: 10, 20, 30, 40, 50, 60 parts to the inch. Easy-to-read printed graduations will not rub off. General Information Manufacturer:Staedtler Inc.Manufacturer Part Number:987 18-34BKManufacturer Website Address:http://www.staedtler.comBrand Name:StaedtlerProduct Name:12" Triangular Engineer ScaleMarketing Information:12" triangular scale in Staedtler's professional series is ideal for engineers. Color-coded grooves in the high-impact polystyrene ensure quick and accurate selection of the desired scale. Three sides with six different scales feature die-engraved graduations. Engineer triangular scale is fully divided: 10, 20, 30, 40, 50, 60 parts to the inch. Easy-to-read printed graduations will not rub off.Packaged Quantity:1 EachProduct Type:Triangular Scale Product Information Length:30.48 cmGraduations: 10 20 30 40 50 60 Measurement System:ImperialMeasuring Edge:Triple Physical Characteristics Color Family:WhiteProduct Color:WhiteProduct Material:PolystyreneWeight (Approximate):1.60 oz (45.36 g) Miscellaneous Recycled:NoAssembly Required:NoCountry of Origin:Germany Product Numbers: 98718-34BK 031901950798 STD95079 318931 STD98718-34BK STD9871834BK 031901907112