Never Fade Scales: Laser etched and Black Anodized (the anodic oxidation techniques),the scales is bold and legible, NEVER fade or Rub Off
High Quality: Made from high grade anodized aluminum and well-machined. Durable to use and a good grip in hand. Triangular Body Design for Safer Cutting and Scoring of Materials
Precise Scale: Professional grade for supreme accuracy. Reliable for Engineers and students Drafting their blueprints, designs or drafts
Imperial Scale: 3 sides with 6 scales - 1:10, 1:20, 1:30, 1:40, 1:50, 1:60. Ideal for Blueprint, Professional Applications, Architecture,Civil Engineering, Drafting and Technical Illustration