Pacific Arc Engineering Triangular Scale, Slim Ruler 12 Inch

Pacific Arc Engineering Triangular Scale, Slim Ruler 12 Inch

Intoy 12 Inch Triangular Engineer Scale Ruler, Anodized Solid Aluminum Core with Laser Etched Scales, Imperial Scale - 1:10, 1:20, 1:30, 1:40, 1:50, 1:60, Ideal for Civil Engineering Drafting

Triangle Set 10 Inch 30/60 & 45/90