T67 Timely Springs and Screw Threads Template

 Size 5-5/8" X 9-3/4".11 sizes –– 1/4 to 1-1/8 Dia. Quickly draw crisp, uniform threads - coarse or fine, regular or sectional view, right or left hand, internal or external. You can draw open or closed springs, plus end views, and various spring ends. The thick lower edge and pin-point centering make it easy.