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Description: | J//13 Standard B.13 Card J.29o 0'//i Jan.89//"J" Card for Admiralty Pattern Compass. Speculum metal cap & // point Museum 26 April 07// J.W.
J//Royal Crown
Card-Dia. 7.6" (19.3cm) Mica covered with paper, blue with black and blue markings.Graduated to 1/4 points and quadrantally in degrees. Black painted brass pivot cap with speculum metal bearing at centre.
Needle-Four parallel heavy edge bar needles. Two x 7.25" (18.4cm) long, each of four laminations, 0.5" (1.3cm) deep having a semi-circular swell at centre, 1.25" (3.2cm). Two x 5" (12.7cm) long, each of two laminations 0.5" (1.3cm) deep. The pivot cap is mounted in a crossframe attached to the needles. Two brass strips are fitted in the N & S line each carries a sliding weight.
Inscription.
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | compass cards | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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