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