B. Interpupillary Adjustment.
1. Whilst looking through both eyepieces (1), move eyepiece tubes (2) on their axis, holding head
by the eyepiece tubes housing the prisms. (3).
2. When a full field of view is obtained, and converted into a single image, interpupillary distance is
correct for your eyes.
3. Each user must adjust interpupillary distance to match their eyesight
C. Focussing
1.
Turn objective turret (5) so that the lowest magnification number 2X is facing the front of the
microscope, lined up with the eyepiece, and the 4X magnification is located at the two sides,
perpendicular to the eyepiece. The turret permits a 1/4 turn. Make sure that turret is “clicked”
into its correct position.
NB:
Fot ST-37 model, omit steps 2,3 and 4, passing directly to 5.
2.
Place a flat object or a slide on center of stage (9).
3.
Turn focus knobs (13) to mid range.
4.
The head holder (11) is mounted on a column (15), and can be moved up or down to
accommodate the size of the sample.
a.
Support head (4) with one hand without touching any lens.
b.
Without letting go of the head, loosen the screw supporting the head holder (12).
c.
While looking through the eyepiece (1), move the head holder up or down until the object
appears in focus.
d.
Tighten the head holder support screw.
e.
These steps are not necessary every time the stereomicroscope is used, only when the sample
is not in the range of focus.
5.
Turn focus knobs (13) until the image is sharp.
D. Adjusting the diopter.
On the left eyepiece tube there is a diopter adjustment collar. Its normal position is when the lower
part of the collar is aligned with the sign marked on the eyepiece tube.
In the case of differences in eyesight:
With the right eye, look through the right eyepiece (1) and adjust focus.
Now use the left eye to look through the left eyepiece, and adjust the focus by turning the diopter
adjuster, on the left hand eyepiece tube, until a detailed image is achieved. Do not adjust the focus
with the focus knobs (13).
E. Changing magnification.
Turn objective turret (5) so that the highest magnification number 4X is facing the front of the
microscope, lined up with the eyepiece, and the 2X magnification at the two sides, perpendicular with
the eyepiece. The turret permits a 1/4 turn. Make sure that turret is correctly “clicked” into correct
position.
-5-
