Focusing (figure 21, figure 22)
When the video set is not in use. Push in the light path
selector lever (figure 25) then observe with both eyes. Use
the x10 objective to focus and avoid touching the specimen
with the objective. Raise the mechanical stage slowly. The
operator can turn the coarse focus knob to get the specimen
broadly in focus and search in the x10 ocular
simultaneously, and then use the fine knob to focus
perfectly. At this moment, you can replace other objectives
safely, and focus without the risk of destroying the
specimen.
When using the video set, pull out the light path selector
lever (see figure 25), observe with both eyes, when the
image is sharp you can see the pictures directly on the
video screen, which connected by the microphotograph
system through to the video mount. If you need to fix the
stage on a vertical position to make the observation become
more convenient, use of the locking set.
Adjusting the Swing-out Condenser (Figure 23)
The centre of the condenser and the light axes of the
objective are coaxial. It has been adjusted before leaving
the factory so the users do not need to adjust them. The
highest position of the condenser has been adjusted too.
Turn the condenser focus knob to shift the condenser. The
condenser is raised when using the high magnification
objective, and declines when using the low magnification
objective.
15
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Routine Laboratory Microscope