光学测角仪
- 网络optical angle gauge
光学测角仪-
传统的光学自准直比较测角仪都是依靠人眼从仪器的目镜中观察分划板，长时间操作容易造成测量人员眼睛疲劳，增大瞄准读数误差，降低工作效率。
The traditional method to use Autocollimator is to interpret the pattern on the reticle through the eyepiece of the instrument . A long time operation is likely to cause eyestrain , increase the alignment error and reading error , and reduce efficiency .