Unique 4-in-1 drawing compass/ruler - draw circles, triangles and straight lines - construct, COPY and read angles - measure/convert inches and centimeters - create patterns. Easy to use - just slide cursor to desired position and lock; place finger on the transparent swivel disc; place pencil point in cursor hole and draw a circle. Inch markings up to 4-1/2". Contains 40 student compasses and one clear overhead compass.
