Screw-log



noun, Nautical.
1.
patent log.
noun, Nautical.
1.
any of various devices for determining the speed of a ship by means of a vaned rotor streamed at the end of a log line upon which it exerts a torsion transmitted to a registering device on board.
noun
1.
(nautical) any of several mechanical devices for measuring the speed of a vessel and the distance travelled, consisting typically of a trailing rotor that registers its rotations on a meter Compare chip log

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    noun 1. drive screw.

  • Screw-nut

    noun 1. a nut threaded to receive a screw.



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