Fein Optic M46, User Manual, Page: 12 / 16

M46 Microscope Operation Instructions
11 Fein
To adjust the field diaphragm, pull the field
diaphragm adjustment knob (1) to the lowest
position. The image of the field diaphragm
can be observed in the view through the
eyepieces. Adjust the two field diaphragm
centering screws (2) until the image of the field
diaphragm is in the center of the field of view.
Gradually open the field diaphragm until the
image of the field diaphragm is overlaid with
the filed of view (3).
Adjusting the aperture diaphragm is performed
the same way as the field diaphragm. Use the
aperture diaphragm knob (1) and the centering
screw (2) same as mentioned in previous steps.
3
1
2
Outer Edge of
the objective
Aperture
diaphragm image
(inner ring)
70% - 80%
1 2