Westcott 259 4-Inch Circular Protractor Measuring Tool

The Westcott 259 is a 4-inch circular protractor designed for measuring and drawing angles across a full 360-degree range. Unlike semicircular protractors that only cover 180 degrees, this tool allows you to read any angle without repositioning, which saves time during drafting and layout work. Its half-degree calibration marks provide finer precision than the one-degree increments found on most standard protractors, making it a practical choice for tasks where accuracy matters — from architectural drawings to geometry assignments.

Constructed from clear transparent plastic, the protractor lets you see through to your work surface while lining up measurements, reducing guesswork when aligning to existing lines or reference points. The laminated surface with a solid center adds durability against everyday handling, resisting the flexing and scratching that thinner plastic tools are prone to. At 4 inches in diameter, it is compact enough to carry in a drafting kit or pencil case, making it well-suited for students, designers, architects, and engineers who need a reliable angle-measuring tool that travels easily.