Nikon Eclipse E400 POL Інструкція з експлуатації - Сторінка 17
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3. Operation of Each Part
Clamp the coarse
focus stopper
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Purpose of the coarse focus stopper
The coarse focus stopper marks the stage position at which the specimen is in focus by
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restricting the movement of the coarse focus knob. (Movement of the stage by the fine focus
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knob is not restricted.)
Once the coarse focus stopper has been clamped in position. the coarse focus knob cannot be
used to move the stage any higher. In effect, once the coarse focus knob has been clamped in
place at the focus position, a rough focus can be attained the next time simply by turning the
coarse focus knob as far as it will go. This feature is convenient when viewing similar
specimens one after another.
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Using
the coarse focus stopper
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With the specimen in focus, turn the coarse focus stopper ring as far as it will go in the dire
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of the arrow on the base of the microscope (about 3/4 revolution). The coarse focus stopper is
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now clamped in position.
When changing the specimen, lower the stage by turning only the coarse focus knob.
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After changing the specimen, gently raise the stage by turning only the coarse focus knob as far
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as it will go.
The specimen should be roughly in focus when the stage has been raised as far as it will go: use
the fine focus knob to bring the specimen into perfect focus.
If the coarse focus stopper is not being used, be sure to turn the coarse focus stopper ring in the
rrow on the microscope base as far as it will go.
direction opposite to the
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