| 摘要 |
<p>The present invention relates to an apparatus for stably installing a geodetic survey staff for precise measurement. The apparatus comprises: a detachable coupler which is coupled to the lower end of a lower measuring rod; and a landing base for verticality of staff to which the detachable coupler is detachably coupled and which accurately maintains the verticality of a staff at a ground control point and each point. The apparatus can vertically install the staff by only coupling the staff to the detachable landing base for verticality of staff and standing the staff thereon in a state that the detachable landing base for verticality of staff is landed on the ground, thereby improve measurement accuracy. The direction of the staff can be changed in a state that the staff is coupled to the detachable landing base for verticality of staff and stood thereon without lifting up and landing the detachable landing base for verticality of staff or separating the staff therefrom and coupling the staff thereto when the user changes the direction of the staff, thereby clearly eliminating a measurement error as the location of the staff is changed.</p> |
