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Description: | No 92 Cast steel nedle forged tempered and magnetised Devonport Yard Oct 1844 Deflection at 2 lengths =40o William Walker Deflection Sept 1923 at 2 lengths = 31.5"
SYEDS & DAWS 49 Rotherhithe LONDON
Card-Mica covered with paper, black with white markings, graduated to 1/4 points with a decorated East point.
Needle-T-shaped with the vertical "fin" cut away at centre to accommodate jewel cap. Has an expanded centre which has a hole cut in it to take pivot cap. Length 5" (12.7cm)
Pivot- A long cone-shaped heavy brass cup fitted jewelled pivot at top, attached through hole at centre of needle. As the point of suspension is 0.75" above plane of card a small metal disc is secured to lower end of cap. This disc has a hole through which the pivot passes to cup.
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | William Walker | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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