Open the compass and measure a distance of 3.2 cm on the ruler. To do this one, metal end tip of the compass should be placed at zero and the pencil should be at 3.2 cm.
Mark a point with a sharp pencil where we want the centre of the circle to be. Name it as O.
Place the pointer ( metal tip) of the compass on O. The width of the compass should not be altered.
Turn the compasses slowly to draw the circle. Please see that the movement is completed around in one instant.