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MI-4100LDH Model
The MI-4100LDH model comes with a dual
teaching head. In addition to a 30º inclined
eyepiece, its vertical eyepiece allows simultaneous
viewing or digital camera photography. The vertical
eyepiece is equipped with a diopter, which adjusts
for focusing differences between the different
eyepiece users. Have the inclined eyepiece user
focus the microscope first. Then have the vertical
eyepiece user rotate the diopter adjustment (the
knurled band) until the specimen is also in focus
for his or her eyes.
Installing the Dual-head
While unpacking the MI-4100LDH you will find
two separate components: the vertical eye tube,
and the eyepiece (contains the lens).
1. Remove any plastic caps from the eye tube,
eyepiece, and the head.
2. Place the eye tube onto the head of the
microscope and screw it into place.
3. Place the eyepiece on top of the eye tube.
(You may have to loosen the screw using a
screwdriver before setting the eyepiece into
place, and then tighten it in place.) Secure the
eye tube by tightening the set screw with a
screwdriver.
MI-4100LBH Model
The MI-4100LBH model comes with a
binocular head for enhanced image examination
and extended viewing comfort.
Installing the Binocular Head
The binocular head is packaged separately
and will need to be installed using the following
procedure:
1. Remove the binocular head carefully from the
packaging.
2. Take off any protective plastic caps from the
bottom of the binocular head and on the base
above the nosepiece.
3. Loosen the set screw located above the
nosepiece.
4. Set the binocular head firmly in place, making
sure the v-groove fits against the two fixed
screws and flush against the head support,
and tighten the set screw.
5. The screw should be tight enough that the
head doesn't wobble. When the head is stable,
the slide is easier to view.
6. To readjust the binocular head, loosen the
screw, turn the head (it rotates 360°) and then
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tighten the set screw making sure the head is
stable on the base and does not wobble.
7. Place an eyepiece in each eye tube. (You may
have to loosen the small screws before setting
the eyepieces into place, and then tighten
them again.)
Using the Binocular Head
To use this feature to the best advantage, you
must set the interpupillary distance to match the
distance between the pupils of your eyes. You
must also adjust the diopter to compensate for
focusing differences between your eyes. Each user
of the microscope
must make these
adjustments
his or her own
eyes. To do so,
follow these steps:
1. Start
focusing
small
specimen in the center of the viewing field
using the 10x objective. The iris diaphragm
should be in the closed position.
2. Focus your eyes on the specimen.
3. Pull your eyes back from the eyepieces about
1". In your peripheral vision you will see two
field view circles overlapping each other.
4. Open or close the distance between the
eyepieces by pulling them apart or pushing
them together until the two circles merge
together and appear as one circle. The
interpupillary distance is set correctly when
you see just one field view circle. Record the
settings so you can return to your adjustment
easily.
5. Turn the nosepiece until the lowest power (4x)
objective clicks into place.
6. Holding a card over your right eye (the eye in
front of the eyepiece with the diopter) bring the
specimen into focus for the left eye.
7. Cover your left eye with a card and bring the
specimen into sharp focus for your right eye by
turning the knurled diopter band on the right
eyepiece. Do not use the coarse and fine focus
controls for this last step – use only the diopter
adjustment.
Maintenance
Adjusting the Stage Stop
The stage stop is set at the factory to insure
that the stage cannot come up far enough to hit the
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by
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Interpupillary
settings
Knurled diopter
adjustment
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