Manual surveying instrument having collimation assisting device

Abstract

[Problem] To provide a manual surveying instrument that allows easily performing a collimating operation and allows performing a high precision measurement in a short time. [Solution Means] The manual surveying instrument includes a collimation assist device () having a collimation light transmitting system that emits a collimation light (R) along a collimation axis (O) toward a target installed at a measurement point, an area sensor () that obtains an image of a scene captured within a field of view of a collimating telescope (), a display unit () that displays the image, a collimation light detecting unit () that detects the target as a result of receiving the collimation light reflected on the target by the area sensor, and an arithmetic control unit () that displays an area () being within a predetermined deviation from the collimation axis and where distance measurement is possible and a symbol indicating the target on the display unit as an animation image, judges that collimation has been completed when the target has been captured, by a manual operation of the collimating telescope, within the area where distance measurement is possible to perform a distance and angle measurement, and corrects an angle measurement value according to a deviation from the collimation axis of the target.