Turning and Boring Tapers

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. When they are designated by the amount per foot, the usual way, the difference in diameters is always meant as in pipe thread tapers or in taper keys. Thus, pipe threads taper of an inch to every foot in length or 1...