Professional templates feature a transparent, matte finish to prevent glare, with green plastic corner risersto prevent ink blotting. Distinctly printed in easy to read black ink that will not wear away. They are dimensionally stable and unaffected by temperature changes. Includes 27 ellipses of 35 degrees, and 16 foot projection from 1/8 in. to 2 in. Includes 9 inch and 24 centimeter scales.