Theodolite readings Branch of the Instrument (certified), theodolite provided by Qingdao Branch of the Instrument Co., Ltd. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) is specialized in the "mapping equipment, analytical instruments, testing equipment, flow meters, optical instruments, temperature instruments," the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Li Yongjie. There can be automatically recorded by coded dial perforated dial code reading theodolite; continuous automatic aiming automatic air target tracking theodolite; rapid determination of the orientation of the gyroscope ground point and use the gyro directional laser theodolite independence principle; with theodolite, Meridian instrument and Almighty for astronomical observation instrument zenith theodolite three roles; the camera together with theodolite combined photography theodolite for measuring ground photography and so on. Measuring instrument in the measurement of the angle of the horizontal angle must have two basic requirements: (1) gives a theodolite horizontally disposed, and its center line direction can be easily placed on the same vertical line of intersection of the scale disc - horizontal circle; (2) there must be a distant goal can aim the telescope, and to be able to make a full circle rotation in the horizontal plane and the vertical plane, so that the level of the telescope through different target A and B. The difference between the figure for the two directions of the horizontal angle β A and B readings: β = ba