Untuk menentukan arah di laut pada saat berlayar di atas kapal.
| Dial graduation | : Φ165mm |
| Using temperature | : 0°~360° 1°for each grid -25℃~+60℃ |
| Indicating deviation | : (H=35μT,T=20±3℃) ≤0.5° |
| Half period | : (H=35μT,T=20±3℃) ≥8.62 S |
| Friction deviation | : (H=35μT,T=20±3℃) ≤0.09 |
| Main semicircle self heterodyne correcting energy | : 1°~45° |
| Secondary semicircle self heterodyne correcting energy | : 1°~6°(magnetic inclination Q=45°) |
| Quadrant self heterodyne correcting energy | : 0.5°~10° |
| Inclining self heterodyne correcting energy | : -75~+75μT |
| Lens barrel flexing range | : ±10mm |
| Dial image expanding rate | : ≈2times(original dial graduation) |
| Lighting power supply | : AC 220V,DC 24V |
| Outline Dimension | : 20X430X1300mm(Excluding the length of lens barrel) |
| weight | : 70 kg |