Alvin 131C Professional Drafting Triangles, Drawing Triangles, Acrylic 45/90 Drafting Triangles

These professional Alvin 45 degree professional acrylic triangles will not discolor or warp with age and handling. The machined finish and hand polished edges of these clear triangles meet or exceed government specifications. All models feature a double-taper cutout center for quick, easy lifting from any angle. Alvin 45 degree professional triangles are available in several convenient sizes.