Survey device

Abstract

Abstract PURPOSE:To eliminate the trouble of the plumbing of a survey device by providing an index which indicates the collimation direction of the telescope of the survey device near the focus position of a plumbing telescope, and detecting the distance and direction of the perpendicular axis of the survey device body to a measurement point. CONSTITUTION:A coordinate plate 6 is placed under the survey device body 2 and under the measurement point Q. The coordinate plate 6 has a through hole 7, X-Y coordinates, and a level vial at the center part. The survey device body 2 is installed on a tripod 1 with a plumbing device 3 interposed. A collimation telescope 4 and a plumbing telescope 5 are provided to the main body 2. The optical axis of the plumbing telescope 5 is so bent as to be superposed upon the perpendicular axis of the main body 2, and indexes 9a and 9b which indicate the collimation direction of the telescope 4 are formed on the focus plate. Then, the distance between the intersection P0 of the perpendicular axis of the main body 2 and coordinate plate and the measurement point Q is measured. Then, the main body 2 is rotated to align the indexes 9a and 9b to the measurement point.

Inventors

• 👤 Kazuo Ranmura
• 👤 覧村　和夫
• 👤 Toshiyuki Kanai
• 👤 金井　敏行

Bibliographic Details