|
Date: |
|
Description: | LORD KELVIN'S Sir Wm Thomson PATENT No 5380 SOLE MAKER JAMES WHITE 18 CAMBRIDGE ST GLASGOW
SIR W.THOMSON'S PATENT No 4704 (Trademark) KELVIN & JAMES WHITE Ltd GLASGOW
SIR WILLIAM THOMSON'S PATENT No 1267 J.WHITE GLASGOW
Sir Wm THOMSON'S (KELVINS) 6 compass and binnacle 1882-1906
Bowl-Dia.7.1" (18cm) Bronze painted brass with weight attached to base. Inside of bowl painted white with a black lubber line painted on side. Brass boss in centre of verge glass which serves the double purpose of retaining the card on the pivot and providing a socket for a shadow pin or an azimuth mirror.
Card-Dia. 6" (15.2cm) "Kelvin light dry type". White with black markings, graduated to 1/4 points and quadrantally in degrees. Paper rim attached to centre ring, into which jewelled pivot cap fits, by radiating threads.
Needle-Four parallel needles suspended below card.
Pivot-Pivot point in brass stem mounted at base of bowl.
Binnacle-Dia. 12" (30.5cm) Wooden pedestal with brass top and fittings. Fitted with sphere brackets and spheres. Two wooden doors give access to fore and aft and athwartship corrector magnet racks. A bucket for the vertical corrector magnets is fitted. Hood: brass with a large glazed oval aperture at one side and a smaller oval aperture with lid on other and a circular glazed aperture at top. Oil lamp brackets are fitted on each side (one lamp missing).
O.A. Height 44" (111.8cm)
caption: unavailable
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
|
|