Pacific Arc Triangular scales offered as both an architect's scale and an engineer''s scale in 12 inch lengths.
Collegiate triangular scales are made of plastic and color coded for easy use.
An architect's scale is a specialized ruler designed to facilitate the drafting and measuring of architectural drawings, such as floor plans and orthographic projections.
An engineer's scale is a tool for measuring distances and transferring measurements at a fixed ratio of length. It is used in making engineering drawings, commonly called blueprints, blue lines or plans in a specific scale.
