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Date: |
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Description: | TYPE P.1. No 7
W D
Liquid compass
Bowl: Black painted brass, two filler plugs at side, expansion chamber at base. Mounted at 45 degrees in protective case 5.5" x 5.5" x 3.0" (14cm x 14cm x 7.6cm) containing anti-vibration system. Verge ring carries electric lamp, for illuminating card at night, and a corrector magnet carrier is attached at top. Inside of bowl painted white. Fitted with black wire lubber line on the fore side of bowl.
Card: Small light white paper card, graduated in black to 360 degrees, attached to light framework at centre of which is attached a pivot cap.
Needle: Two needle magnets attached below card.
Pivot: Unsighted, as verge glass is partly opaque, believed to be of the inverted type.
O.A. height 8.0" (20.3cm)
Inscription.
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | liquid compasses | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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