- 6 -
All parts (Fig.1)
B
Eyepiece
C
Trinocular head (A = tubus, B = counterring)
d
Eye relief control
E
Diopter setting
F
Microscope stand
g
Nosepiece with 4 objectives
H
Microscope table (mechanical desk with vernier scale)
i
Lengthwise knop
j
Cross knop
1)
Condenser
1!
Codenser height adjustment
1@
Coarse focusing wheel
1#
Fine focusing wheel
1$
Illumination – On/Off switch
1%
Dimmer
1^
Immersion oil, light bulb and fuse
1&
Fixing screw for trinocular head
1*
Up stop for microscope table
1. General/Location
Before you set up the microscope, you must choose a suitable
location. Firstly, you must make sure that your microscope is on a
stable and solid surface. For observations with the electric illumination
an electrical power outlet is required.
2. Eyepiece
For observation with this microscope, two eyepieces (1) are required.
With the eyepiece and with a chosen objective lens, you can choose
the magnification of the microscope. The eyepieces are inserted into
the head from above.
TIP: Begin each observation with the lowest magnification. So, the
centering and focusing of the object to be viewed is easy.
3. Built in electric illumination
The microscope has a built-in electric illuminator. It works by plugging
the connection cable into the electricity supply. It can be switched on
or off with the switch (14) in the rear of the microscope. Use the
dimmer (15) to change the intenity of the light.
4. Adjust the eye relief
The eye relief varies from person to person. In order to achieve a
perfect interaction between your eyes and the eyepieces, the eyepiece
distance should be adjusted before the first observation. Look through
the eyepieces and adjust the eye relief control (3) until you reach a
single, round image. Keep the value on the scale in mind for a faster
adjustment the next time.
5. Observation
• You begin each observation with the lowest magnification (eyepiece
10x and objective 4x). So that the object to be viewed is centred and
properly focussed.
• The higher the magnification the more light is required for good
picture quality.
• For applications with the 100x objektive, it is recommended that
examinations are done only with oil immersion.
Begin with a simple observation.
Turn the nosepiece (6) onto the smallest magnification and insert the
10x eyepieces. Now, place a preparared slide directly under the
objective on the microscope table (7). Move the preparation on the
table with the two adjusting screws (8 and 9). Now, look through the
eyepieces (1) and turn the coarse adjustment (12) carefully until the
image becomes visible. The definition is applied by the fine adjustment
(13). Make sure that you never overtighten the fine adjustment. If you
don’t reach a sharp image after the fine adjustment, you may adjust the
diopter setting (4) until it matches your eye. For this, turn the diopter
setting (4) to ”0”, look through the eyepieces and close your left eye.
Focus the object for your reight eye using the coarse and fine focusing
wheels (12 and 13). Now, close your right eye and look only with the
left eye through the left eyepiece. If the image isn´t sharp, turn the
diopter setting (4) to get a sharp image.
6. The microscope table
With the microscope table (7), you can look at your preparation in a
precise position and to the exact millimeter with the microscope table
(7). The object is placed between the clamps on the microscope table.
Move the object, with help of the axis-adjustments (8 and 9), directly
under the objective. With the built-in vernier at both axes you can now
specifically set and shift the object. It can now viewed with different
magnifications.
7. Oil Immersion
Directions for observation with oil immersion. Put a drop immersion oil
(16) onto the upper lens of condenser and raise the condenser by using
the height adjustment (11) until the oil touches the slide from below.
Centre your object, with middle magnification, and with the light
illumination on. Move the nosepiece with the coarse focusing wheel up
high and screw in the 100x objective. Take a drop of immersion oil and
place it on the preparation. Move the objective down carefully with the
coarse adjustment, until it touches the immersion oil. Look through the
eyepiece and focus with the fine adjustment. Do not forget to clean the
objective, the preparation and the condener after the observation with
some alcohol.
8. Changing the bulb (Fig. 2)
Turn the microscope
off using the On/Off
switch and pull the
plug out of socket.
Wait, until the lamp
has cooled down
surely. Then lay the
instrument carefully
on its side. Undo the
screw (1) to open the
housing. The bulb
and its mounting are
now visible.
Carefully remove the old bulb from its socket (2). Insert a new one
carefully. Clean the new one with a little alcohol to remove any
fingerprints. Then close the housing again and retighten the screw. The
microscope is now ready for use again.
9. Changing the fuse (Fig. 2)
A fuse is built in for safety reasons. Should it burn through, replace it
as below: Pull out the plug and lay the instrument carefully on its side.
Carefully, undo the ”FUSE” screw (3). Use a small screwdriver for the
purpose and press the screw a little in. Remove the old fuse and insert
a new one of same type (1 A, T). Retighten screw and fuse again. The
microscope is now ready for use again.
10. Photography using the Trino Researcher
The trinocular head (2) on the Researcher makes it possible to take
pictures using a mirror reflex camera or a Bresser MicrOcular.
NOTE. The Researcher Trino was designed for use with a Bresser
MicrOcular. When using a mirror reflex camera the large picture
area causes shadowing. This worsens the greater the
enlargement.
CAUTION!
To work with this microscope, sharp and pointed aids are being used. Please take care that this micros-
cope and its accessories are stored at a place out of reach of children. Let children only work with this
microscope under an adult’s supervision! Keep packing material (plastic bags etc.) away from children!
D
B
C
Fig. 2
