Riviera BP1 Bulkhead Compass. Italian MOT and RINA approved. Internally gimballed and backlit this compass has a 4" (100mm) card with 5 degree graduations. 
Gimbal type: Internally gimbaled
Lighting: 12 V standard (24V on request)
Reading: Frontal
Card graduations: 5°
Apparent card dia: 3" - 80 mm

Built in inclinometer displays heel angle and makes this ideal for sailing vessels.

Comes with protective plastic cover