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10" HOKUSHIN GYROSPHERE w WOOD CASE - SHIPS MAIN GYRO COMPASS YOKOGAWA JAPAN vtg

$ 211.2

Availability: 100 in stock
  • Brand: Hokushin / Yokogawa
  • Condition: a little scuffing and scratching overall but in generally nice condition -- unable to test so sold for rebuild/parts -- original padding in the case has deteriorated and most has been removed --
  • Country/Region of Manufacture: Japan
  • Restocking Fee: No
  • Item must be returned within: 30 Days
  • Warranty: No Warranty
  • Returns Accepted: Returns Accepted
  • Return shipping will be paid by: Buyer
  • Manufacturer Part Number: 7555
  • Refund will be given as: Money Back

    Description

    vintage 10 1/4 in. Gyrosphere - the heart of a Gyro Compass -- used in ship/boat navigation and guidance
    -- labeled 'Hokushin,' which later merged with Yokogawa -- possibly WWII vintage but likely newer -- Sphere measures 10 1/4 in. [257mm] across by 9 3/4 in. [248mm] high / weighs about 19 pounds -- enclosed in the original wood carrying case with metal data plates with Japanese characters, and English text -- case measures 12 3/4 by 12 1/2 by 12 1/2 in.
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    a little scuffing and scratching overall but in generally nice condition -- unable to test so sold for rebuild/parts -- original padding in the case has deteriorated and most has been removed
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    * from Yokogawa Denshikiki Co., Ltd.
    "A gyrocompass detects the direction of true north by means of a fast-spinning rotor, which is suspended with no friction and is influenced by gravity and rotation of the Earth. A gyrocompass consequently indicates a ship's heading. The ship's heading is transmitted to repeater compasses and other ship's equipment after the signal format is converted to serial data or to stepper or analog signals depending on what type of format the equipment requires.
    1) Master Compass MKM026
    The master compass consists of a control unit, container unit, and anti-vibration mechanism.
    A gyrosphere, the key component of north seeking, is suspended in the container unit." *
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    Free Local pick-up is an option.
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