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Chetwynd`s patent ships compass

£1800
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Chetwynd`s patent ships compass

£1800

A Captain Chetwynd`s patent compass by Kelvin, Bottomley & Baird Ltd. Circa 1915.

An illuminating marine compass mounted on a gimble contained in a wooden box. 

Marked: KELVIN, BOTTOMLEY & BAIRD Ltd CAPTAIN CHETWYND'S PATENT - No 25965 / 06 GLASGOW & LONDON

PATT. 24C 

Patented by Captain Louis W. Chetwynd of London.

Width: 26.5 cm.

Depth: 26.5 cm.

Height: 24 cm.

Captain Louis Wentworth Pakington Chetwynd (b. 15 December 1866, d. 18 April 1914, Coombe Neville, Kingston-on-Thames, Surrey) was Superintendent of the Compass Dept. at the Admiralty during the early 20th C. He resumed the work of other inventors such as Crow and Creak, and patented several compass systems. Among his improvements was the design of a smaller compass card in the bowl. This solved the problem called the "swirl error" caused by the moving liquid during quick movements (like course changes and heeling) of the ship. He became 1912 managing director with Dent & Co. and Johnson Ltd.