Accuracy Comparison of Digital Level and Precision Optical Level
Zhao Rui, Gang Fan · Journal of Zhengzhou Institute of Surveying and Mapping · 2006
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.This article first introduces how to use laser interferometer and mirror placed in 45° to compare digital level with optical level,and then analyzes the accurate of the two kinds of levels.Finally it points out the advantage and shortcoming of them.