Precision Protractor with Ruler - 180° Angle Measurement Tool #224323 (License: Personal Use)

This semi-circular protractor features dual concentric degree scales (inner 0-180° clockwise, outer 0-180° counterclockwise) for flexible angle reading, a straight ruler edge marked in centimeters and inches, and a central pivot point for accurate vertex alignment. Made of durable, transparent plastic, it includes fine gradations every 1° and bold numerals every 10°, with “MADE IN CHINA” printed near the base. The design supports both classroom learning and technical drafting applications.

Used in educational settings (math/science classes), engineering workshops, architecture studios, and DIY projects where users need to measure or construct angles accurately; matches intent for purchasing or learning about geometry tools.