Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 195
n which accurateadjustment is necessary. A very common method of graduationis by the use of a screw with a pitch of J^ inch and 200 graduations MACHINE SHOP WORK 147 on its dial. In some cases, a screw with a pitch of -| inch is usedwith 250 gnuhiations, biit it is always safe to assume that… … Fig. 210. be neglected. Even in a machine in excellent condition, when themotion of the screw is reversed, it will turn through an angle giv-ing the equivalent of about .005 inch movement of the part beingfed along, but with no actual movement of the part. As an ex-ample, if, in moving the table…
Mechanical engineering
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