This is an electronic tachometer, which consist of an electronic transit theodolite added electronic distance meter + internal data storage facilities. which not only measure the horizontal and vertical angles and distances electronically but also is capable of calculating the parametric positions and levels instantaneously.
An electronic field book can be interfaced with the instrument to record and store not only the angles and distance but also the co-ordinates and levels of the points and other related information. The least count is 1mm for linear measurements and 1″ and less for angular measurement.
Total station can be used to measure and obtain data apart to distance and angular measurements on-site like (a)Automatic slope correction,(b)Remote elevation(c)Missing line,(d) Horizontal c