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4.3 Coarse and fine focusing
For focusing of the instrument please use the coarse and fine focus knobs on the left and right
side of the microscope stand. (Fig.13-1)
The direction of vertical movement of the revolving nosepiece corresponds to the turning direction
of the focus knob.
One full rotation of the fine focus knob moves the nosepiece 0.2mm in z-direction. One scale unit
on the fine focus knob equals 2 microns.
(Fig.13-1)
Cautions for behavior need avoid, which will damage the precision of Instrument directly:
Never rotate the left or right knob while holding the other.
Never try to turn the coarse and fine focus knob beyond their limitation position.
Never try to grasp the coarse and fine focus knob to rotate together
4.4 Coarse focus torque adjustment
To increase the torque, turn the torque adjustment
ring in the direction of the arrow located at the
left-hand coarse focus.
To reduce the torque, turn the ring in the opposite
direction of the arrow. (Fig.13-2)
(Fig.13-2)