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SCALE ENGINEER TRI-SCALE PA T-5121
These 12" triangular scales are ideal for scholastic and vocational use. Satin finish, high-impact plastic with tapered edges. Sharp, easy-to-read graduations resist wear. White. English and metric. Items 110PC and 111PC are blister-carded. All engineer scales have the following graduations unless otherwise noted: 10, 20, 30, 40, 50, 60 parts to the inch.