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 344
1396. BALL SOCKET, used on surveyors7| compasses. The gland is tightened with countersunk screws. … 1397. BALL SOCKET, with a screw£ gland. V THREAD
Mechanical movements
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