PRICES MAY VARY. [PREMIUM QUALITY] This engineering triangle scale is made of anodized aluminum alloy, very solid and sturdy. Designed for maximum durability, this 3 sided metal architect ruler is perfect for lasting use [PRECISE IMPERIAL SCALE] The aluminum triangle ruler is professional grade with supreme accuracy. With reliable construction and accurate performance, the black construction ruler is ideal for architects, engineers, draftsmen and students [TRIPLE SIDED DESIGN] The classic…