Nikon S-kt - Page 15

5. |||Ot|ING
THE
SPECIMEN
ON
T||E
STAGE
(1)
Rectangular
Mechanical
Stage
ttRrt
This
stage enables
f ine
crosswise
travel of
the
slide in
a
range
of
50mm
x 75mm.
allowing reading
of the movement
to
O.imm by the
use of
the vernier
pro-
vided.
For
securing
the
slide
in
position
on the
stage,
open
the
slide holder.
Each
direction
travel
is
performed
by
rotation
of
two coaxial knobs
located
one
above the
other
on the
vertical rod
protruding
below on the
left
side viewed
from
the
front,
the upper
knob
being
for
longitudinal
and
the lower
one
for
lateral
travel of
the slide on
the
stage
(Fig.
19).
In fluorescence
microscopy
or when
using
oil immersion
objectives,
where
the clear-
ance
between the
condenser
and the
slide
also
should be
oil-immersed.
thickened
oil
may cause
irregular
travel of
the
slide.
In this case, removing
the circular
open-
ing
plate
at the center
of the
stage or
fastening
the
slide
holder
lock
screw will
be helpful for
a
positive
travel of
the
slide
(Fig.
20). Also,
the use of
the
stage
with
spiral
grooves
is
recommended.
By
loosening
the
stage lock
screw on the
edge of
the
stage, the stage
can be
rotated
horizontally for
convenience
in observa-
tion
from
the opposite
side of the micro-
scope
(Fig.21),
where
the eyepiece
tube
is rotated
180'. This rotation
of the
stage
may often
be
of use in
photom
icro-
graphy,
when
the
picture
format
is chang-
ed from
vertical
to horizontal
or vice
versa. lt is
recommended
that the
slide
adapter on
the
stage
(Fig.21)
be used
for
sufficient
longitudinal
travel
of the
slide
in
such
reversed
position.
Fig.
19
Slide
holder
lock
screr"ry
Fig.2O
Fis.21
16