Verulam 300mm Triangular Scale Ruler with Architects & Engineers Metric no.0 Scales - Side 1: 1:2.5 & 1:5, Side 2: 1:10 & 1:20, Side 3-1:50 & 1:100

描述

Verulam 300mm Triangular Scale Ruler with Architects & Engineers Metric no.0 Scales - Side 1: 1:2.5 & 1:5, Side 2: 1:10 & 1:20, Side 3-1:50 & 1:100