111P Vocational Plastic Triangular Engineer ScalesAlvin's most popular series, these budget-priced 12" triangular scales are recommended for scholastic and vocational use. made from satin-finished impact plastic with tapered edges and black easy-to-read printed graduations that won't rub off.Available in white or eye-saver yellow. Architect, engineer and mechanical draftsmen graduations. Inch and metric.Allarchitects scales have the following graduations : 3/32, 3/16, 1/8,1/4, 1/2, 1, 3/8, 3/4, 1-1/2, 3" to the foot; one edge graduated to16ths.All engineers scales have the following graduations unless otherwise noted: 10, 20, 30, 40, 50, 60 parts to the inch.
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