These protractor scales are clear and precise, easy to measure and read, with identifying lines for every 10 degrees, and can be measured left-to-right or right-to-left.
Geometry protractors are made of high-quality plastic, thick and strong, lightweight, compact, easy to carry and store.
Semicircle protractor size: 10.1 x 5.7cm / 4.0 x 2.2", measurement range: 0 to 180 degrees. Color: Transparent.
Suitable for teachers, engineers, designers, architects and others with measurement needs. For work or school, hobby or weird curiosity.