The D camera eyepiece is attached to the spotting scope instead of a standard observation eyepiece.
照相机目镜可作为附加件用于观鸟镜，代替标准的目镜使用。
Observation eyepiece consists of concave mirror and a separate gate is formed, in the eyepiece can be seen at the same time the two semicircle color, its left for the sample color.
观察目镜由凹镜和分隔栅组成，在目镜中可同时看到二个半圆色，其左边的为试样颜色。
In 1920, the comparison eyepiece is introduced, which allows simultaneous observation of two specimens under two microscopes.
1920年，比较目镜问世。此项技术使得可以同时观察到来自两台显微镜的样品。
Eyepiece: wide field , high-point eyepiece , it can observe image of observation specimen with glasses.
目镜： 使用高眼点广角目镜，为佩戴眼睛的观察者提供方便。
Eyepiece: wide field , high-point eyepiece , it can observe image of observation specimen with glasses.
目镜： 使用高眼点广角目镜，为佩戴眼睛的观察者提供方便。
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