Compton, Alfred G. (Alfred George), 1835-1913 · New York : J. Wiley & Sons · leaf 158
144 FIRST LESSONS IN METAL- WORKING. lield thus, the two points must just touch both surfaces. Finally, the calipers must be handled … Fig. 81, a. carefully, being laid down on the bench gently, so as not to alter their adjustment, and must be Fig. 81, b. occasionally tested by comparison with the rule, or with a block already finished to the right size. "When the distance between the two bases is
Metal-work
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