About this item 

• 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,
• Durable laser etched scales 1-1/2", 1, 3/4", 3/8", 3/16", 3/32", 1/2" 1/4", 1/8", 3, 16 Parts to the Inch. 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.