Alumicolor Compass Ruler 18" - Clearance

Make perfect circles up to 36 inches in diameter with ease! The extruded, tempered aluminium rulers are marked on both sides with wear- and chemical-proof, photo-anodized calibrations, in metric on one side and inches on the other. Set the ruler up with the anchor point and lead in the correct positions, and you will know the radius, area and circumference of any size circle. Easy to adjust and use, they come complete with the shaft, anchor point, lead holder and lead in one handy package. Excellent for a multitude of uses.