How to use metallographic microscope low magnification lens
1. metallurgical microscope light
Turn the coarse adjustment screw with your left hand to raise the lens barrel or lower the stage, and then turn the objective lens converter to align the low power lens with the light hole of the stage (when turning, pay attention to make the notch on the top of the objective lens match the fixing buckle of the base) Interlocking), open the aperture, rotate the light collecting mirror lifting screw, so that the lens plane at the upper end of the light collecting mirror is slightly lower than the height of the stage plane, open both eyes at the same time, and adjust the direction of the mirror at the same time until the light in the field of view is uniform , until the brightness is moderate.
2. Metallographic Microscope Place slide specimens
Take a slide specimen and put it on the stage, with the cover glass facing up, fix it on the propeller, then turn the propeller screw by hand, and align the specimen part to be observed with the center of the light hole .
3. metallographic microscope focus adjustment
Turn the coarse adjustment screw by hand so that the distance between the low-magnification lens and the glass slide is less than 6mm (you must watch the distance between the objective lens and the glass slide from the side when adjusting, and do not turn the coarse adjustment screw while observing the eyepiece to prevent the lens Damage caused by collision with glass slide>, then open both eyes at the same time, slowly turn the coarse adjustment screw by hand to raise the lens or lower the stage. until a clear object image appears in the center. If the object image is not in the center of the field of view, you can move the position of the slide specimen up, down, left, and right (note: the moving direction of the fragment is opposite to the moving direction of the observed object image). If the distance has exceeded the working distance but no object image is seen, the above steps should be strictly followed to re-operate.
