Patent ID: 11940274
Assignee: TOPCON CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The tilt detecting device according to claim 2, wherein said arithmetic processing module is configured to, in a state where said tilt detecting device is stationary, a) rotate said tilt detecting unit 90° around said first shaft, b) then rotate the same 90° around said second shaft, c) then rotate the same 90° around said first shaft, d) then rotate the same 90° around said second shaft, e) then rotate the same 90° around said first shaft, f) then rotate the same 90° around said second shaft, g) then rotate the same 90° around said first shaft, h) then rotate the same 90° around said second shaft, perform the calibration of said tilt sensor for said first shaft and said second shaft based on the detection signals of said tilt sensor before and after each 180° reversal of said tilt detecting unit on said first shaft and said second shaft in a process of rotating said tilt detecting unit around each shaft in the same direction in the 90° increments, and perform the calibration for a third shaft based on the detection signals of said tilt sensor before and after the 180° reversal around said third shaft orthogonal to said first shaft and said second shaft.