17
3．Coarse and fine focusing
y F
ocusing function is realized with the coarse and fine focus knobs at the left and right of the
microscope stand.
y The direction of vertical movement of the stage corresponds to the turning direction of the focus
knobs.
y One rotation of the fine focus knob moves the stage 0.2mm
up or down movement. The graduation
on the fine focus knob is 2 microns.
Please avoid following action:
y Never attempt either of the following actions, since doing so will damage the focusing mechanism.
y Rotate the left or right knob while holding the other.
y Turning the coarse and fine focus knobs further than their limit.
4. Coarse focus torque adjustment
y To increase the torque, turn the torque adjustment ring located behind the left-hand coarse focus in
the direction of the arrow. To reduce the torque, turn the ring in the direction opposite.
1. Coarse Focus Torque Adjustment Ring 2. Coarse Focus Knob 3. Fine Focus Knob
(Fig.20)
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