This Engineering Triangle Ruler is made of anodized aluminum alloy for strength and durability. Designed for maximum durability, this 3-sided metal architect ruler is perfect for long-lasting use

Architectural scale ruler solid aluminum construction, never fade or rub off,Black anodized finishing, easy to read,

For Professional Applications, Architecture,Civil Engineering, Drafting and Technical Illustration, Architects and Students

Constucted of premium anodized aluminum alloy,the architecture scale ruler features a duable and sturdy design.

[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