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MAGNIFICATION KNOB – Used to change the M28Z and M29TZ
magnification settings.
STAGE PLATE – Opaque and black and white stage plates are
provided with the microscope stand. The opaque stage plate allows
light from the bottom illuminator to pass through. The black and
white stage plates can be used for additional contrast to the
specimen that is being viewed.
STAND – Used to support the stereo microscope head. The height is
adjustable which allows the head to change its focusing range. The
stand also contains the top and bottom Illuminators.
TOP ILLUMINATOR – The round-shaped housing which contains a
light source that can be adjusted up or down to illuminate the
desired spot on the stage plate.
TURRET – The round barrel that houses the objective lenses. The
SM90 Series has two magnifications that can be changed by rotating
the turret to a different set of objective lenses.
OPERATING YOUR SM90 SERIES STEREO 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.
The SM90 is equipped with two built-in magnifications. To
change magnifications, rotate the turret one direction or to the
other as far as it will move. This will place one pair of
objectives in alignment for viewing. The power that is in use is
marked on the objective barrel.
3.
Look through the eyepieces and rotate the focus control knob to
focus the specimen in the field of view.
4.
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.
5.
Close your left eye and adjust the focus controls so the image is
in sharp focus, while viewing with the right eye only.
6.
Close your right eye and while viewing with the left eye
