Engineer Scale Ruler 12 Inch, Aluminum Laser-Etched Triangular Drafting Tool for

Aluminum Triangular Drafting Tool: Engineer ruler is made of high quality durable aluminum, suitable for use in a variety of scenarios, better than fragile plastic products. 3 Sided Imperial Scales: 1:10, 1:20, 1:30, 1:40, 1:50, 1:60.

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