track magnet

English

Noun

track magnet (plural track magnets)

  1. (rail transport) A magnet incorporated in railway track for various purposes.
    • 1960 December, “Talking of Trains: Recording electric operation”, in Trains Illustrated, page 707:
      Train positions and speeds were established by a track magnet at each milepost, which produced a suitable mark on the punched recording tape whenever a train passed.
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