Copying
18
For
the
DURST
DA
900
copying equipment
for
plates and sheet
films
up
to
21/2
X
30"
(6.5 x 9 cm.) is available separately. This consists of:
1.
The URNOV copying cassette
which
consists
of
a closed frame
with
a ground glass screen.
With
the
URNOV cassette come
two
plate holders and
two
sheet
film
inserts
for
the
format
2112
x
30"
(6.5 x 9
cm.).
Reducing adapters
for
13/4
x
2114"
(4.5 x 6 cm.)
plates
and
sheet
film
inserts
for
13/
4
x 21/4" (4.5 x 6 cm.) are available as separate
accessories. A guide rail is provided
for
inserting
the
cassette and
opening
the
dark
slide.
2.
The
RILU
lighting
unit:
this
consists
of
two
hard-chromium steel
lamp supporting bars.
To
use
the
RILU
lighting
unit,
first
fasten
the
two
mounting clamps in
the
provided
drilled
holes
of
the
base board.
Proceed
as
follows:
loose
the
two
cross-slot
screws
(36), then lay
the mounting clamps
with
their
smooth side upwards over
the
two
drilled
holes on the base board.
To
fasten
the
mounting clamps use
the
two
cross-slot
screws
(36) and
the
two
screws
delivered
together
with
the
RILU
lighting
unit. Then attach the
two
clamping
sleeves
to
these. The
height
of
the
bars can be adjusted and
locked
with
a clamping screw. On each bar are
two
individually
controlled
lights
which
can be
slid
along
the
rod and can
be swiveled upwards. These take opal lamps
of
up
to
150
W.
Each
light
has a
diffusing
screen
which
provides even illumi-
nation
of
the
original. By using colour or polarization
filters
special
effects
may be obtained. The lamp supporting bars can
be
tilted
back
when
not
in use
so
that
they
do
not
interfere
with
the
enlarging
work. For
perfect
illumination
of
originals
of
over
12
x 16" (30 x
40
cm.) format, the RILAR special extension arms are available as a
separate accessory. These are placed between the
two
clamps on
the
base board (2) and the lamp supporting bars
of
the
RILU.
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