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Date: |
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Description: | No 74
Royal Naval Experimental Card Anterior to 1865 Short needles 74 6.0 Card with Short needles for Admiralty Compass 1861
Card-Mica covered with paper, white with white and black markings, graduated to 1/4 points and quadrantally in degrees.
Needle- Four short compound edge bar needles, 2 x 3.6" and 2 x 2.7" long, each composed of three laminations of steel. Two brass strips, one E-W and one N-S carrying sliding weights are fitted. The whole is attached on two metal rings 3.5" and 6.75" diameter, the outer being screwed to card.
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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