The kit is molded of clear plastic with legible black markings for exact measuring.
Drafting - This kit includes a 12" (31 cm) T-square with inch/metric calibrations, one 4" (10 cm) 45°/90° triangle, one 4" (10 cm) 30°/60° triangle, a 4" (10 cm) 180° protractor, and a 5-1/4" (13 cm)...
® Westcott is a registered trademark.