8
only, adjust the diopter ring on the left eyetube to bring the
image of the specimen into sharp focus. The optical system is
now adjusted to your particular vision.
7.
Rotate the turret to switch to another magnification if
necessary. Minor focusing using the focusing control knob may
be required.
OPERATING YOUR M28Z / M29TZ SERIES
STEREO ZOOM MICROSCOPE
1.
Place the specimen onto the stage plate and select the type of
illumination. If the specimen is transparent, turn on the bottom
illumination. If the specimen is opaque, turn on the top
illuminator.
2.
Turn the diopter adjustments (on the eyepiece tubes) until the
rotatable diopter tube touches the silver line on the eyepiece
tubes.
3.
Grasp the eyepiece tubes and move them either closer together
or farther apart, to see one clear image. Note, if two separate
images are observed, the eyepiece tubes are too far apart and
should be moved together. If two overlapping images are seen,
the eyepiece tubes are too close together and should be moved
apart.
4.
Rotate the magnification knob to 4.0X (zoom in). Now adjust
the focus with the focusing control knob.
5.
Rotate the magnification knob (zoom out) to 1.0X and focus
each eye (one after the other) with only using the diopter
adjustments. (This may be achieved by closing one eye while
the other is being adjusted).
6.
Repeat adjustments 4 and 5 if further focus is required.
7.
Once the diopter adjustment has been made for each eye, the
user can operate the focusing knobs on the microscope stand to
get new specimens into focus.
