3.3.3 Focusing the specimen(Fig.18
、
19
）
1. Focus the specimen with 10X objective. To avoid the objective touching the specimen
during focusing, you should raise the mechanical stage to let the specimen close to the
objective at first, then slowly dispart them to bring the specimen to focus.
2. Turn the coarse focus knob conversely to lower the specimen and search images in the
①
10×ocular simultaneously, and then use the fine knob to make focus. After that, you can
②
replace with other magnification objectives safely, and focus without the risk of damaging the
specimen.
●
The tight tension of the coarse focus knob has already been adjusted before leaving
factory.If loosen (e.g. the stage slip down by its weight), please screw the intention adjustment
collar to the right position by the supplied spanner.
③
19
BIOLOGICAL MICROSCOPE
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