Radio kompas Riviera Prisma Ø2

Riviera compass bearing Prism. The white rose has black graduation each grade. Internally accessiblein case of repair. Fully removable and repairable. Device to trap air. 
STANDARD FEATURES:
- Apparent diameter 2-1/4 (-57,5 mm);
- Jewel and pivot movements;
- Prismatic lens reading;
- Standard 1,5 V DC lighting (battery);
- Repairability;
- Air bubble trap;
- White card with black 1° graduation.