Purpose: The instrument is a new precision inclination measurement device adopting a high resolution sensor and with a microprocessor for data processing. It is mainly used to determine verticality of borehole of concrete pile. It can also be used for lateral movement of excavation slope, dam, and sliding slope, as well as inclination measurement in the other geology and engineering area. It includes three parts: 1. receiver; 2. Inclinometer probe, 3 winch and cable (optional); Technical parameters: 1. Measurement range: 0～30°; 2. Measurement error: (1) 0～10°: 10′; (2) 10～30°: 20′; (3) If measurement range is less than 5°, error is less than 6′; 3. Resolution: 36"; 4. Power supply: AC 220V±10%, 50 Hz; 5. Cable length: 100 m; 6. Size of inclinometer probe: Φ50×1500mm; 7. Weight of inclinometer probe: 16.5 kg; 8. Size of controlling case: 280×230×110 mm; 9. Airproof performance: pressured endured ≤20 MPa; 10. Working environment: (1) Controlling case: 0～45℃; (2) Inclinometer probe: -10～50℃; 11. It can save 25 pieces of test data;