Rulex 30cm Metal (c) Triangular Scale Ruler 1:1 1:10 1:2 1:20/1:5 1:50 1:100 1:200/1:500 1:1000 1:1250 1:2500

Rulex 30cm Metal (c) Triangular Scale Ruler 1:1 1:10 1:2 1:20/1:5 1:50 1:100 1:200/1:500 1:1000 1:1250 1:2500

Rulex Verulam 30cm 12 inch Flat Oval Metric Scale Ruler RIBA Approved No. 3 Scales: 1:1 1:100 1:5 1:50/1:20 1:200 1:1250 1:2500

Architectural Scale Ruler, Aluminum Triangular Scale Ruler Metric 1:20, 1:25, 1:50, 1:75, 1:100, 1:125 Standard 12 Inch for Architects, Students, Draftsman and Engineers-Black