Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 768
be completed until the breech plug is closed, A push-button is used tocomplete the circuit and fire tbe gun, Speed Recorder. An instrument called the Weaver Speed Recorder is somewhat usedfor measuring the speed of ships when run on tbe measured mile, and whilebeing Jaunched ; also to measure the… … excited it pulls its pen against the moving paper tape, and makes a dotthereon The connecting levers between the magnet and pen are arrangedsomething like a piano finger action, so that no matter how long the magnetis kept excited, the pen will only make a quick, short dot All pens arelocated side…
Electrical engineering
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