C-Thru 12" Scholastic Engineer Scale
Printed in 3 colors for easy scale identification. Fully divided, numbered in: 10, 20, 30, 40, 50, and 60 parts to the inch.
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.
