Helix 300Mm Metric Triangular Scale Ruler

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Helix 300mm Metric Triangular Scale Ruler 300mm / 30cm / 12 inch Triangular plastic rule featuring high grade print and 3 colour coded faces Metric and scale graduations Scales fea tured: 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 Show more