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Description: | Wooden frame containing five photographs of representative compass cards collected for exhibition in Norway in 1949.
1. Two needles in form of a parallelogram, 17th & 18th Centuries.
2. Single flat needle as used in Dr.Knight's compass. 1750-1794
3. Four laminated needles on edge. Admiralty Standard Compass. 1842-1889
4. Eight light needles -Lord Kelvin's card. 1876-1948
5. Liquid compass card with float and two round needles. 1906-1948
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | William Dr Gowin photographs Thomson Knight | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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