SURVEYING INSTRUMENT WITH ATTACHMENT FOR MEASURING INSTRUMENT HEIGHT

摘要

PROBLEM TO BE SOLVED: To enable acquisition of an instrument height of a surveying instrument without causing a measuring error and an input error and without necessitating a measuring tape, by a construction wherein an optical path deflecting means and an arithmetic means for determining the height of the instrument from a point of survey are provided at the fore end part of an objective lens of a telescope. ;SOLUTION: A surveying instrument 10 is installed, with a tripod 11 interposed, so that the center A of the instrument is positioned vertically above a point O of survey. An instrument height H is a distance from the center A of the instrument to the point O of survey. In a total station, moreover, a distance measuring device is provided along with a telescope 8. The surveying instrument 10 is equipped with an arithmetic means 9 which reads values of measured angles (horizontal angle and elevation angle) and a measured distance value and determines specific results of survey by specific computation, an output means which executes output of display or others and a memory 9A storing various constants used for the computation. An attachment 20 for measuring the instrument height is fitted removably to the fore end of the telescope 8 and the optical axis of the telescope 8 is thereby deflected downward.;COPYRIGHT: (C)1997,JPO