Alumicolor Select-a-Scales engineer 12 in.

Alumicolor Select-a-Scales are an ultra convenient and functional drafting tool that allows Architects and Engineers to select multiple scales all in one product. The unique design incorporates a sculptured arch on the bottom for ease of movement. A rotating rod on the top displays one of six available scales on the front as well as a raised inking edge.Made from extruded aluminum with calibrations added using Alumicolor's photo anodizing process.
Brand: Alumicolor