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Date: |
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Description: | No 27 Spare Card Devonport Yard June 18th 1857 91
Dry compass
Card: Mica covered with paper, white with black markings, graduated to quarter points.
Needle: Single steel needle, T shaped with the vertical fin cut away at the centre to accommodate the jewel cap. The centre of needle is slightly expanded. 6.75" in length.
Pivot: The jewel cap is carried in a brass stem 0.5" above the face of the card and screwed through the centre of the needle.
Inscription.
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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