Helix 300mm Metric Triangular Scale Ruler, Red

Triangular plastic rule featuring high grade print and 3 colour coded faces Metric and scale graduations Scales featured: 1:1, 1:10, 1:2, 1:20, 1:5, 1:50, 1:100, 1:200, 1:500, 1:1000, 1:1250, 1:2500 Ideal for professional use