2. Fix the temporary film loading at the proper position on the stage.
3. Align the low-power objective lens with the through-hole, adjust the lens barrel from top to bottom with the coarse focusing screw, and observe with the eye from the side to avoid the objective lens contacting the glass slide and damaging the lens and crushing the glass slide.
4. The left eye observes the change of the field of vision through the eyepiece, and at the same time adjusts the coarse focus spiral to move the lens barrel slowly upward until the field of vision is clear.
5. If there is no object to be observed in the field of vision, the film can be moved. The principle is to turn up and down, and left and right.
6. If it is not clear enough, it can be further adjusted with fine collimation screw
7. If you need to observe under a high-power objective lens, you can rotate the converter to replace the objective lens. If the visual field is dark, it can be adjusted by the method of 1; If it is not clear enough, it can be adjusted by the method of 6, but not by the method of 4.
8. After use, please adjust the converter so that the empty lens hole faces the through-hole, make the reflector stand up, adjust the lens barrel to the lowest, and then install it into the mirror box.
