9
microscope increases the tension, and toward the front of the
microscope loosens it. Tension is too high if you experience physical
discomfort
4)
Pre-focusing or Focus Stop Control
Use of this feature will insure
that the longer objectives don’t contact the stage or specimen when
using the microscope. Its use also simplifies focusing. After focusing
on the specimen with the coarse adjustment, rotation of the lever
toward the front of the microscope will set an upper limit on the coarse
adjustment movement. After changing specimens or objectives,
focusing is easily accomplished by rotating the coarse adjustment knob
to reach the pre-focused position, then making fine adjustments with
the fine adjustment knob. Focusing movement with the fine adjustment
knob isn’t affected by using the pre-focusing lever
3.
Interpupillary and Diopter Adjustments
1)
Diopter Adjustment
Proper
correction for individual vision is
accomplished via the diopter
adjustment located at the left
eyepiece, see Figure 6. Using the
40X objective, close your left eye
and bring an image into focus with
your right eye only. Once the
image is well focused, make fine adjustments with the diopter
adjustment ring to correct for your vision.
2)
Proper interpupillary distance,
or the distance between eyepieces, is
crucial to the comfort of the user. Adjusting the interpupillary distance
is accomplished through a “folding” action of the optical head, at
Figure 6, allowing for quick and easy adjustment
4.
Mechanical Stage Controls
– The mechanical stage, see Figure 7, with
Ultra-Low position control knobs for ease of use, consists of three parts:
1)
The smaller knob for transverse adjustment
Figure 6
Diopter Adjustment Ring
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