Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)
Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 343
I|lll|lll|llljll!|l|l|lll|lllj|ll| 1390. VERNIER CALL p|iii|ifilii|n|;^iiil) PER, with slow-motion stop screw. … 1391. EXPAN-SION BIT.—Thespring clip held bya screw clamps thecutter in position to bore any size hole within its limits of expansion.
Mechanical movements
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