Bowl-Grey painted brass, two filler plugs at side and four side expansion chambers. Inside of bowl painted white with lubber mark carried on a large black metal frame attached to side. Mounted in grey painted brass gimbal ring 9.5" (24.1cm) diameter.
Card- Dia. 3.25" (8.2cm) black painted mica with clear markings, graduated in degrees and to 360o. Attached to white painted float at centre.
Needle- 2 x 2" (5.1cm) of circular section mounted below float.
Pivot- Black metal stem, secured at centre of bridge mounted across centre of bowl, carries a steel pivot point which engages in jewelled conical pivot cup at centre of float.
O.A. Height 3.15" (8cm)