Scale Rules

Architect's Trianglular Academy scale rule. Accurate and clear 12" (300mm)

Dividings: 1:20x1:25, 1:50x1:75, 1:100x1:125

Architects No. 3 Verulam scale rule. 300mm 12" oval rule. Professional quality with exceptional clarity and legibility.

Dividings: 1:1, 1:100x1:20, 1:200, 1:5, 1:50x1:1250, 1:2500