For use in submarine projector binnacle.
Bowl-Grey painted brass, filler plug at side and expansion chamber at base incorporated with glazed bottom of bowl. 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 quadrantally in degrees and to 360o. Attached to black painted float at centre.
Needle- 2 x 2" (5.1cm) of circular section mounted below card.
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)
In fitted wooden carrying case 10" x 10" x 5.5" (25.4 x 25.4 x 14cm)