Plain Mechanics Protractor

A Plain Mechanics Protractor is a measuring tool used by craftsmen in various industries, such as woodworking, metalworking, and engineering. It is classified under the supply class "Measuring Tools" and belongs to the supply group "Craftsmen's Measuring Tools."

The Plain Mechanics Protractor is designed to measure and mark angles accurately. It typically consists of a flat, transparent plastic or metal base with a rotating arm or blade attached to it. The base is marked with a scale, usually in degrees, allowing users to measure angles with precision.

Craftsmen use the Plain Mechanics Protractor to measure and transfer angles for various purposes, such as cutting materials at specific angles, aligning components, or verifying the accuracy of existing angles. It is a versatile tool that can be used in a wide range of applications, including carpentry, metal fabrication, machining, and construction.

When using a Plain Mechanics Protractor, craftsmen typically place the base of the protractor on the surface they want to measure, align the rotating arm with the desired angle, and then mark or transfer the angle as needed. Some protractors may also have additional features, such as a locking mechanism to secure the arm in place or a built-in level for ensuring accurate measurements.

Overall, the Plain Mechanics Protractor is an essential tool for craftsmen who require precise angle measurements in their work.