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The Tengfei CPT-130B is the “Standard” or “Economy” counterpart to the CPT-130A. While it shares the same 130mm dial diameter, the B-model is typically lighter and features a more compact binnacle stand, making it ideal for vessels with limited bridge space.
In technical terms, both are Class A/B liquid magnetic compasses (manufactured to GB/T 14108-2011 standards), but they differ in their self-correction capabilities and physical footprint.
| Feature | Specification |
| Dial Diameter | ɸ 130mm |
| Dial Graduation | 0° to 360° (1° per division) |
| Indicating Error | ≤ 1.5° |
| Friction Error | ≤ 0.26° |
| Half-Period | ≥ 5.59 seconds |
| Correction Energy | Semicircular: 1°~40°; Quadrant: 1°~5° |
| Lighting Power | DC 24V |
| Certifications | CCS (China Classification Society), ZY |
| Feature | CPT-130B (Desktop) | CPT-130A (Desktop) |
| Heeling Error Correction | No (Standard B-model) | Yes (A-model includes heeling magnet) |
| Weight | ~5.5 kg | ~7.5 kg |
| Mounting Pitch | 155 mm | 214 mm |
| Height | 330 mm | 370 mm |
| Material | Aluminum Casting / ABS | Aluminum Casting |
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