##### Rules for Figuring Tapers | Smithy - Detroit Machine Tools

Diameter at small end in inches. Large diameter, length of taper in inches, and taper foot: Divide taper per foot by 12, multiply by length of taper, and subtract from large diameter. Diameter at large end in inches: Small diameter, length of taper in inches, and taper per foot: Divide taper per foot by 12, multiply by length of taper, and add ...