Engineer's scale rulers by Alvin, Fairgate and Alumicolor are used for surveying, measuring roads, water mains, and other topographical features on drawings or blueprints. These are tools used for measuring distances and transferring measurements at a fixed ratio of length. They are also used to make engineering drawings, commonly called blueprints or plans with a specific scale.
Engineer drafting scales are available in different colors, lengths, and graduations. Select from pro-quality triangular engineers scales constructed of durable hardwood, aluminum, plastic, or bamboo. Typical engineering scales have dimensional graduations such as 1 inch=10 ft. or 1:10, 1:20, 1:30, etc. Choose the engineer's ruler that best fits your specific job and budget.