Patent ID: 9605956
Date: 2017-03-28
CPC Classifications: G01C

Claim:
1. A surveying instrument, comprising a surveying instrument main body and a remote control operation unit being attachable to and detachable from said surveying instrument main body and capable of communicating with said surveying instrument main body, wherein said surveying instrument main body has a telescope unit for sighting a measuring point, a laser pointer irradiating unit for irradiating a laser pointer beam running in parallel to or on the same axis as an optical axis of said telescope unit, a rotation driving unit for rotating said telescope unit in any direction as desired, an angle detector for detecting an angle measuring value, and a main body control unit for controlling said rotation driving unit to direct said telescope unit in a predetermined direction, wherein said remote control operation unit has an operation button, a directional angle sensor and a vertical sensor, said angle measurement value is transmitted to said remote control operation unit by pressing said operation button under the condition where said remote control operation unit is removed, wherein said remote control operation unit calculates a difference between the directional angle and the vertical angle detected by said directional angle sensor and said vertical sensor before moving and the directional angle and the vertical angle after the moving of said remote control operation unit, wherein either one of said remote control operation unit and said main body control unit calculates an angle measurement value after the moving based on said difference and said main body control unit rotates said telescope unit so as to become said angle measurement value after the moving.