- This compass has a black metal bowl gimbal mounted in a mahogany box. The inscriptions read "DEAD BEAT" "C.B. PATENT" "No 11904" "HUSUN," and H. HUGHES & SON, LTD LONDON, PATD GT BRIT. No 127135."
- Hughes trade literature describes this form as having been "especially designed for the navigation of Yachts and Motor Craft, the rapid movements of which demand a compass of exceptional steadiness and sensitivity." To that end, it has a special expansion chamber that "precludes the formation of bubbles in the liquid." The needles are short, and made of cobalt-steel. The card is printed "by a new photographic process that eliminates discoloration." And patented damping filaments ensure the steadiness of the card.
- British Patent #127,135 describes an "Aperiodic Magnetic Compass" made by attaching to the magnetic needle filaments of glass, wire, or other suitable non-magnetic material. This patent was granted in 1919 to George Campbell and Geoffrey Bennett, both of the Compass Department of the British Admiralty.
- H. Hughes & Son, Ltd. was in business, as such, from 1903 to 1947.
- Ref: Henry Hughes & Son, Ltd., Husun "Dead-Beat" Compasses for Yachts (London, 1939).
- H. L. Hitchins and W. E. May, From Lodestone to Gyro-Compass (New York, 1953), pp.150-152.
- Currently not on view
- Object Name
- Nautical Compass (Liquid)
- date made
- H. Hughes & Son, Ltd.
- place made
- United Kingdom: England, London
- overall: 9 in; 22.86 cm
- overall: 6 1/2 in x 13 1/2 in x 13 3/8 in; 16.51 cm x 34.29 cm x 33.9725 cm
- ID Number
- accession number
- catalog number
- Data Source
- National Museum of American History
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