Professional template metric ellipse.
With built-in inking risers.
68 ellipses in sizes from 5mm to 30mm in projections of 250, 350, 450 and 600.
Includes 200mm scale.
Made from dimensionally stable .8mm green transparent plastic.
Matte finish on one side to reduce glare.
Designed for use with a 0.5mm pencil lead.