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4
The fine focus has two modes: when the left focus wheel is pulled out, each line on
the wheel equals 1 µm of movement. When it is pushed in, each line equals 4 µm of
movement.
Figure 5. Focusing wheels
2.6 Eye pieces (oculars)
Adjust the folding bridge of the oculars until you see, using both eyes, only one
circular field of view through the oculars. Use the diopter adjustment on the oculars to
match your vision (Figure 6, part B). Initial setting for the diopter is 0 for both eyes,
which is set when the edge of the ocular is on the silver ring (Figure 6, part A). People
with strong astigmatism should wear their eyeglasses when looking through the eye
pieces.
Figure 6. Diopter adjustment. A, setting for 0 diopter; B, diopter adjustment
2.7 Dual viewing attachment
Dual viewing attachment allows two people to observe a sample at the same time
(Figure 7). Light path in the microscope is divided into two, and a sample can be
viewed also in the eyepieces on the left side of the microscope. Distance of the
oculars can be adjusted and, as a whole, the eyepieces swivel to facilitate optimum
viewing angle.