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Title: Gyrocompass ballistic [Go to resource]
Description: Gyro ballistic of design introduced in 1917. The black painted gyro is fitted to early sperry gyro compasses prior to the introduction of the mercury ballistic. Publisher: "http://collections.rmg.co.uk/" Source: Royal Museums Greenwich Identifier: http://collections.rmg.co.uk/collections... Go to resource More Like this...
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