Hydrographical surveying : a description of means and methods employed in constructing marine charts (1920)
Wharton, W. J. L. (William James Lloyd), 1843-1905, Field, Arthur Mostyn, 1855- · London : J. Murray · leaf 421
E.N. 391 392 HYDROGRAPHICAL SURVEYING [chap, xviii. The large machine now supphed holds over 5,000 fathomsof 20-gauge wire, and is very compact. It is fitted with twobrakes : one a screw brake for holding the reel when required,the other an automatic brake for stopping the reel when theweights… … Automatic Sounding Machine to carry e,ooo Fatlioms of Wire. A Reel or drum. B Brake. C Braku lever. D Springs. E Regulating screw. F Hand wheel.G Swivelling frame.H Measuring wheel.J Indicator.K Stop. L Wire-guiding roler.:.M Handle for working roller.N Bolt.O Screw brake. wheel, the dial of which…
Hydrographic surveying · Nautical charts
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