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)