| 摘要 |
There are provided a horizontal angles detector for detecting a horizontal angle, an elevation angle detector for detecting an elevation angle, a dynamic displacement detecting means 10 for detecting posture displacement of a surveying instrument main unit in two horizontal directions, and a calculating unit, wherein said dynamic displacement detecting means detects displacement with respect to standard posture of the surveying instrument main unit 1, said calculating unit calculates the horizontal angle and the elevation angle corresponding to dynamic displacement detected by said dynamic displacement detecting means, and compensates the horizontal angle and the elevation angle obtained by the horizontal angle detector and the elevation angle detector respectively are compensated based on the calculated horizontal angle and the calculated elevation angle.
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