Nikon S-kt - Page 12

4.
t0cljstilG
(1
)
Focusing
Adjustment
The model
S-Kt
is
provided
with coaxial,
coarse
and
fine focus
knobs,
both of
which
are
loCated
near the
base.
Clock-
wise
rotation
of either
of the focus knobs
by the
operator
lowers the microscope
stage and vice versa
(Fig.
16, a,
b).
(2)
Eyepiece
Adjustment
When using
a binocular
or
trinocular
eyepiece tube
for
observation,
the adjust-
ment of the user's eye-sight
(diopter)
discrepancy
between
the right
and left
eyes
is
necessary.
This is done
by
rotating
the
adjusting
ring
on the lefthand eye-
piece
tube.
After
focusing
with the right
eye by
raising or lowering
the
microscope
stage,
turn the adjusting
ring
left or
right
to
obtain
a sharp
image
with
your
left eye
as
well. Then,
regulate
the interpupillary
distance
of
the binocular tube by
sliding
the eyepieces left or right
by
means
of
the
knob
(Fig.
17), until the viewfields of
both
eyepieces merge. lt
will be advan-
tageous to memorize
the attained diopter
and
interpupillary
distance
readings for
future use.
The red dot engraved
on the interpupil-
lary distance
scale indicates the
position
where the mechanical
tube length
be-
comes exactly
160mm. The HK
(high
eyepoint type) eyepieces
have
an eyecup
on top,
the
extension
of
which will
give
proper
eye-to-lens
distance.
For those
who wear eyeglasses,
the eyecup
should
be
slipped
on
to
protect
the spectacle
tenses.
Fig. 16, a
Fig. 16,
b
Fig. 17