Rulex 150mm 15cm Mini Black Metal Triangular Scale Ruler with Coloured Stripes and Scales: Side 1 – 1:1 & 1:5, Side 2 – 1:20 & 1:10, Side 3 – 1:50 & 1:100

Rulex 150mm 15cm mini black metal triangular scale ruler with coloured stripes and Scales: side 1 – 1:1 & 1:5, side 2 – 1:20 & 1:10, side 3 – 1:50 & 1:100

Rulex 30cm Black (c) Metal 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

Stylo Aluminum Architect Scale Ruler - 30cm Ruler Laser Etched Triangle Drafting Ruler with Colour Coded Grooves for Blueprint, Drafting - Architectural Scale Ruler for Blueprint (Grey, Metric Units)