| 摘要 |
<p>The present invention relates to a survey reference point installation cradle capable of improving work efficiency as well as installing a survey reference point in an accurate point. The cradle is formed of a tripod fixed on the adjacent ground to a spot for installing the survey reference point, a combination plate installed in a central part collecting the tripod, first and second horizontal frames having each side fixed on both sides of the combination plate and having a horizontal gap to the ground in a side direction, a support plate installed in the first and second horizontal frames to move left and right, and first and second tribrachs placed in an upper part of the support plate and the combination plate to measure the horizontality and center of upper and lower landmark stones.</p> |
