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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