Theodolite structure (mainly common parts): 1. 2. telescope telescope brake spiral helix 3. telescope micro level brake 4. 5. 6. foot level micro helix spiral focusing lens 10. An optical sight 11 The eyepiece focusing dial reading microscope focusing 12. 13. Vertical Index vial micro optical plummet spiral 14. 15. 16. Circular level pedestal base instrument dial 18. 17. Vertical Vertical dial illumination mirror 19. alidade level vial 20. handwheel dial position transform horizontal and vertical angle measuring instrument. By the British mechanic Sisson (Sisson) first developed in about 1730, and after forming but rather improved theodolite, official British geodesy. In 1904, Germany began production of glass dial theodolite. With the development of electronic technology, the emergence of electronic theodolite 1960s. Based on this configuration theodolite, 70s made electronic speed measuring instrument. The main work is to measure the angle measurement instrument. By telescope, horizontal circle, vertical dial, level control, base and other components. When measuring the theodolite tripod with plumb bob or optical plummet instrument centering on the floor of the station theodolite, theodolite instrument with a vial set flat, with a telescope aimed at measuring the goal, with horizontal and vertical dial dial measuring horizontal and vertical angles. Divided by the accuracy and precision theodolite ordinary theodolite; by reading device can be divided into optical theodolite and vernier theodolite; divided by shafting structure and direction theodolite theodolite retest. Theodolite Applications | Jinke Instruments (certified) | theodolite provided by Qingdao Branch of the Instrument Co., Ltd .. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) is Qingdao, a leader in analytical instruments, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Branch of the Instrument in leadership with the staff warmly welcome all inquiries negotiations to create Branch instrumentation a better future.