United Scientific Supply Chalkboard Drawing Instrument

United Scientific Supply Durable, lightweight oversized plastic instruments, designed for whiteboards and chalkboards Triangles, protractor, and ruler are made of white polystyrene and feature handles for ease of use Compass is made of clear acrylic, and accommodates most dry erase and magic markers Individual parts are also available separately Contents Triangle, 45В Degree, 23 base, 16 sides 1, Triangle, 60В Degree, 22 base 1, Protractor, 180В Degree marked with intervals of 1В Degree,20 base, 10 height 1, Meter Ruler, graduated in inches (1 - 39) and centimeters (1 to 100cm), 7cm wide 1, Compass, with locking screw, rubber suction cup, 18 long,accommodates most dry erase and magic markers, radius 15 1 - USS