3.
Rotating the slit image
Swing the aperture and slit height controlknob (15) horizontally to revolve
the slit image at any angle from vertical to horizontal. The rotation angle scale
indicates the angle of image rotation with small division for 5º and big division
for 10º.
Scale
15
4.
Deflecting the illumination light
Loosen the centering knob (11) and swing the slit widht control knob (12)
by the arrow, so the light spot moves away from the center of the microscope
vision field. It is mainly used to examine the eye by indirect retro-illumination.
Fasten the centering knob and the slit light will return to the center of the
microscope vision field.
11
21