The environment where the microscope is placed should be dustproof, sun-proof, anti-corrosive, shockproof and moisture-proof. When the microscope is not used, the objective lens should be placed in figure 8, and the lens barrel and condenser should be minimized (for straight tube microscope). The reflector should be vertical, and the aperture of the condenser should be closed and covered with a cover cloth or sleeve.
When the inclined tube microscope is not used, the objective table and condenser should be reduced as much as possible, and other methods are the same as above.