Gernsback, Hugo, 1884-1967, ed · New York : [s.n.] · leaf 11
hip, while permanent magnet, having a middle pole plied to a ship. It's principal feature is the log line is the rope or cable which is N and two side poles S. The magnet poles that it does away with all dangling thing- heaved over said rail and into the briny are long and narrow. The magnet is ar-… … Copyright by E. P. Co. Every Yachtsman and Sailor Knows What the "Log Line" Is— It Measures the Speed of a Vessel Thru the Water by means of a Spinning Propeller Attached to Its Lower Extremity, Which Connects With a Dial Device at the Taffrail. Errors Are Liable at Any Time, Especially When the…
