Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 275
g the Caliper Measurement from the Scale The use of the square here needs no explanation. The calipermust be set very carefully so that its points touch both surfacesbetween which the distance is to be measured, but not with 270 MECHANICAL DRAWING enough pressure to spring the caliper. The proper… … Fig. 308. Measuring the Diameter of a Cylinder with the Caliper measured with the steel scale, as shown in Fig. 307. Note thatone point of the caliper rests against the end of the scale so thatthe operators attention may be given entirely to reading thescale division at the other point.
Mechanical drawing
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