|
Date: |
|
Description: | E.S. Ritchie & Sons. Inc//Brookline.Mass. 2947 III MADE FOR SPERRY GYROSCOPE COMPANY Brooklyn N.Y.
LIONEL N.Y. U.S.A.
U.S. NAVY BU. SHIPS. MARK I N 778 1940 THE LIONEL CORPORATION N.Y.
Bowl-Dia. 9.75" (24.8cm) Grey painted brass, filler plug at side, expansion chamber at base incorporated with glazed bottom, base fitted with a heavy balancing ring. Inside of bowl painted white with two black wire lubber lines mounted on side. Mounted in a grey painted brass gimbal ring 11.75" (29.8cm) dia.
Card-Dia. 7.5" (19cm) White painted aluminium with black markings, graduated to 360 degs. attached to a large black float at centre.
Binnacle-Dia. at top 14.5" (36.8cm), dia. at base 6.5" (16.5cm). Grey painted brass with brass fittings. Fitted with sphere brackets and spheres, "Flinders Bar" 25.5" (64.8cm) long. A sliding door at side gives access to geared horizontal and vertical corrector magnet mechansim. Corrector coils are fitted quadrantally and are knwon as G coils. Two type A resistance boxes are fitted as would be used for M and F coils.
Hood-Grey painted brass with large oval glazed aperture on one side and a sliding shutter on the other, an oil/electric lamp bracket is mounted to top (lamp missing).
Azimuth Circle-Black painted brass with white markings, graduated to 360 degs. A hinged sight vane 3.25" (8.2cm) long, with slit and "V" notch at top is mounted at 180degs position on circle. A 90 degs prism with spirit level below, and a hinged open frame 5.5" (14cm) long, with thread and black glass reflector are attached above, mounted at 0o position. A 90degs prism with spirit level below is mounted at 270degs position. A mirror in a black painted brass frame is mounted on a bracket at 90degs position.
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 |
|
|