Type

SAURA liquid compass

Bowl

white colour inside, black lubber's line

Card

75mm diameter; mica card; graduated 0-360 degrees in 5 degree
sections plus cardinal points.
2 x Alnico magnets rigidly attached to card float;
Cap of artificial sapphire, Pivot top of platinum iridium alloy

Lighting

Electric lighting from below; 3V from dry cell batteries

Grid Ring

Has 0 - 360 degree graduation.
Easy Course Determination by moving knob fixed on grid plate.
Easy reading; Plastic T-Shaped grid

Suspension

Round gimbal journals

Package

Wooden box