Metal Scale Ruler, 2Pcs 30cm Triangular Scale Rulers for Architects Engineers, Metric Ruler for 1:20, 1:25, 1:50, 1:75, 1:100, 1:125/1:100, 1:200, 1:250, 1:300, 1:400, 1:500(Black)

All numbers and measurement markings on drafting rulers for drawing are laser etched for maximum clarity and readability This metal scale ruler for blueprints is made of anodized aluminum alloy, very solid and sturdy. Designed for maximum durability, this 3 sided metal architectural scale ruler is perfect for lasting use The classic architect ruler included: 1:100, 1:200, 1:250, 1:300, 1:400 and 1:500 ; 1:25,1:50,1:75,1:100 and 1:125, very convenient and useful for professional use and perfect for your needs

【High Quality】 This architect ruler is made of anodized aluminum alloy, solid and sturdy. Designed for maximum durability, this 3 sided engineering ruler is perfect for long-time use

【Laser-etched Scale】 The metric scale ruler with durable laser cut metric prints for accuracy. They will not wipe or scratch off ever

【Metric Scales】Each metric ruler has 3 sides with 6 scales: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125/1:100, 1:200, 1:250, 1:300, 1:400, 1:500. Ideal for blueprint, professional applications, architecture, civil engineering, drafting and technical illustration(Notice: Make sure it is what you want before placing the order)

【Precise Scale】The black scale ruler is professional grade with supreme accuracy, suitable for engineers, professors, hobbyists, manufacturers

【Safe Tool】Our tri-scale ruler was created with your safety in mind. Chamfer edges design, comes with a protective bag, no more accidental pokes, scratches and cuts