| 摘要 |
PROBLEM TO BE SOLVED: To easily position an object in a short time in a surveying instrument which is not provided with an automatic collimation device even when visibility is poor because of fog, night time, or back lighting. SOLUTION: The survey instrument comprises: a light source for emitting the distance measurement to the target placed on the station; a light receiving element for converting the distance measurement light into the distance measurement signal by receiving the returning light reflected from the target; a horizontal angle measurement part for measuring the horizontal angle; a vertical angle measurement part for measuring the vertical angle; a CPU for calculating the distance from the distance measuring signal; and a display part (26) for displaying the measured value. Wherein, the receiving light level meter is provided for detecting the receiving light level of the light receiving element, and the CPU displays a collimation direction marker (40) indicating the horizontal angle and vertical angle on the display part based on the outputs of horizontal angle measurement part and the vertical angle measurement part and also displays the light receiving level at each point of which with gradient of black and white or with color (47), in regarding the moved locus (46) of the collimation direction marker. COPYRIGHT: (C)2007,JPO&INPIT
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