This paper describes geodetic instruments progress in 40 years and inquiries about developing prospect of geodetic instruments in our country.
2
数字水准仪的出现解决了大地测量仪器中水准仪自动读数与记录问题,对当代测量技术产生了积极的影响。
The appearance of digital level solves the problem of level's reading in measuring instrument and makes more active effects in measuring technology at present.
Meanwhile, the method that tests the focus running error by using JSJ integrating inspection instrument through an example of theodolite is introduced.