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The sy mbols
on
Lhe
rotary
kn
ob o
f the binocular
photo Lubes
mean:
100
%
light to th
e eye pieces
L
50%
light to
the eye pieces,
50%
to
the
pho
to
exit
10
%
light
to the
eyepieces,
90
%
La the photo exit
The
viewing
a
ngl
e
of
the
binoc
ul
a
r
SV
and FSA-VR
tubes ca
n
be
adjusted
by
tiltin
g
Lhe front
part of
the
tube between
0
and
40°, The
user
can
thus
set or
alter
the viewing height
to
suit
himself.
Fig.
14
Selting the
binonll
ar
Lube
s
Centring
(he
condenser
and setting the fieJd diaphragm
Focus
the
specimen
using
the
coarse
and
fine drive.
1. Close
the fie
ld di
aphragm. Loosen
tbe
stop screw and raise
the
condenser
to
it
s
upperm
ost
position
with the height ad
justment
(1.8).
2. Turn
th
e
condens er stop screw
(1.1
4) to
lower
the
condenser
until the
edges
of the field diaphragm
appea
r
sharp.
3.
Centre
the
image of
th
e
fi eld
diaphragm
wi
th
the two
ce
n
tering
screws.
4.
Open
th
e
field
diaphragm until
i(just disappears from the
field of
view.
Fig.
15
Cente ring
the
condenser
and
se
ll
ing
the
field
cli<lphrtlgm
13
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