Material: Made from rust proof, aluminum material
Measure: Perfect circles, ellipses, or oblong circles can now be easily made on any irregular flat or round surface with this Circle-Ellipse Projector providing a 1.5 In. to 18 In. diameter
Uses: This lightweight projector comes included with a soapstone crayon and a durable web strap that securely holds the unit on a non-magnetic surface and can be used on either side of the vertical column