Often, a draftsman needs to draw something as big as a house but has to fit it into a piece of paper as wide as a cafeteria tray. Sometimes, they have to draw a tiny screw but need to expand it a hundred times larger. A drafting scale, also called a metric scale, is what a draftsman uses to scale down or scale up an object without deviating from the proportions of the real thing. Drafting scales are basically multi-dimensional rulers. They usually have six faces that contain different scales or size settings. They are used in various fields involving technical drawings such architecture and engineering.
AlumiColor Pocket Scale POP Display, 3300-0 POP
AlumiColor Pocket Scale withclipPOP Display, 3301-0 POP