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Date: |
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Description: | 16-18-20 Cambridge St. Glasgow No.
22032/02-18509/08
Captain Chetwynd's Patent No 25965/06
Chetwynd & Clark's Patents
Kelvin & J White Ltd
Kelvin & James White's Patent
Makers/Kelvin & White Ltd 18 Cambridge Street. Glasgow
No 238.S.
Registered (maker's logo)
Sole makers / Kelvin & James White Ltd 18 Cambridge St. Glasgow
Bowl: Black painted brass, two expansion chambers and two filler plugs at the side, and semi-spherical glass bottom partly filled with oil. Inside of bowl painted white, with black lubber pointer extending from side of bowl to edge of card. The bevelled-edge verge glass has a glass boss and pin fitted at the cantre for use with a deflector. Black painted brass verge ring is fitted with a removable counterpoise, and two fixing bolts on the opposite side to acommodate a magnifier (missing). Bowl is fitted in a heavy black paintede brass gimbal mounting 11.5" (29.2cm) in diameter, in a fore and aft direction.
Card: 6.5" (16.5cm) diameter mica, painted white with black and red markings, graduated to 1/4 points and quadrantally in degrees. The inner ring of graduation figures are painted red, and the outer reversed figures are painted black. Decorated N point incorporating makers name. Card is attached to domed, white painted float at center.
Needle: Unsighted.
Pivot: Unsighted.
In fitted oak box 12.5" x 12.5" x 12.25" (31.2 x 31.2 x 30.8 cm) containing one spanner, two expansion nuts, and spare counterpoise.
Inscription. | Publisher: | http://collections.rmg.co.uk/page/7d7ded6fb50d6031e2884961a200be58.html | Source: | Royal Museums Greenwich | Creator: | Captain Chetwynd | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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