This instrument is a precision optical instrument. The following matters should be paid attention to in the use and maintenance:
1. In use, must be careful and careful, strictly according to the instructions, shall not loose the connected parts of the
instrument, shall not fall, collision, violent vibration is prohibited.
2. After use, it is strictly prohibited to wash directly in water and wipe with a clean soft cloth. For the optical surface, it
should not be hurt or scratched.
3. The instrument should be kept in a dry place without corrosive gas.
4. Avoid the loss of spare parts.