Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . This is as old as MONKEY-liAlL. 147 JIONTK-IUS. Monkey-rail. {Xautical.) A supplementaryrail, above ami lighter than the quarter-rail. Monkey-tail. A small iron crow-bar used bynaval gunnels. Monkey-wrench. A spanner with a movablejaw. The cut shows several kinds. Fig. Monkey- WrenehfS. a lias a spring-dog on the back, catching into
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . This is as old as MONKEY-liAlL. 147 JIONTK-IUS. Monkey-rail. {Xautical.) A supplementaryrail, above ami lighter than the quarter-rail. Monkey-tail. A small iron crow-bar used bynaval gunnels. Monkey-wrench. A spanner with a movablejaw. The cut shows several kinds. Fig. Monkey- WrenehfS. a lias a spring-dog on the back, catching into aratchet. b has one jaw for hexagonal and another for squarenuts. € shows a strong form with a spline. d a serrated jaw to giasp a pipe. e has a screw concealed in the stock. /has a capacity for gripping a hexagonal nut bythe points of its jaws. g is an ordinary machinists wrench of goodquality. Monk-seam. (Xaiitical.) A double seam ofa sail made by overlapping selvages and sewing bothedges. Mono-chord. (M^usic.) 1. An ancient instru-ment with one string which was played as a grew into a 7nanicliird, in which numerous stringswere played by quills. See : PuNO-FORTE. 2. An instrument for experimenting ujion themathematical relations of musical sounds. It con-sists of a single string, stretched between twobridges, one or both of which are movable, andwhich stand upon a graduated rule, for the purposeof readily changing and measuring the length of thepart of the string involved in the vibration.
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