The right for the standard color, optical eyepiece with light regulation and focusing ability, easy to use.
其右边的为标准色颜色，光学目镜具有光线调节和调焦能力，使用方便。
2
Focusingeyepiece provides a sharp, easy-to-read scale, which is designed with semi-transparent blue background so you don't have to point the instrument in a certain direction to get your reading.