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 pushe d 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.
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