Description

A plotting compass is a laboratory apparatus used for drawing and measuring angles in geometric constructions. It consists of a compass with a fixed leg and a movable leg that can be adjusted to create different angles.

To use the plotting compass, the fixed leg is placed on the point of the construction, and the movable leg is adjusted to the desired angle. The compass is then used to draw the desired arc or angle.

Plotting compasses are commonly used in geometry, trigonometry, and other mathematical fields to construct and measure angles, circles, and other geometric shapes. They are also used in engineering and design to create precise drawings and schematics.