It is used for all specification of marine class A magnetic compass.
GFC serial azimuth circles of magnetic compass are used for all specification of marine class A magnetic compass. GFC serial azimuth circles are designed and manufactured in accordance with shipbuilding industry standard GB/T 335-2005 < Marine Compass Azimuth Circle >
Specification:
| Type | inside diameter | outside diameter | Net Wegith |
| GFC-165 | Φ226mm | Φ 239mm | 1.5KG |
| GFC-190 | Φ247mm | Φ 260mm | 1.7KG |






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