constructed to be light-tight in advance of the camera
g.
Service.
installation. The approximate center ofthe darkroom wall
receiving the camera should have a framed camera back
(1) Lubricate the camera in accordance with paragraphs
opening equal in dimensions and construction to that of
the mobile camera unit. The entry between the camera
and the darkroom should be through a light-trapped
(2) Perform the daily preventive maintenance services
passageway. Sufficient clearance should be allowed
detailed in paragraph 3-6.
behind the copyboard end of the camera to permit the
operator's passage for trimming arc lamps and other
h. Camera Installation and Setting-Up Procedures.
servicing. Power, water, drain, illumination, and other
utilities will correspond to those specified for mobile
(1) Location recommendation. The camera,
camera unit installation.
when not installed in the mobile camera van, should be
located in level dry area adjacent to the associated
(2) Leveling. The floor on which the camera
functions of map copy preparation, stripping, and
is installed should be level and solid to minimize
platemaking. The area should be at least 10 feet wide
structural distortion. If the floor is uneven, flat shims
by 1412 feet long, backed by a darkroom at least 10 feet
should be installed under the camera skid rails adjacent
wide by 8 feet deep. The camera room area should be
to the bolts, securing the skid to the floor. These shims
in closed and suitably illuminated to prevent extraneous
should be accurately built up so that the camera skid
light from entering through the lens to the negative and
platform rests solidly, flat, and level on the floor. Retract
from adding uneven illumination to the copyboard.
the six casters with lift handle (5, fig. 2-5) provided on
Adequate air circulation should be provided through
the camera, as shown in figure 2-6.
light-tight louvers or fans. The darkroom should be
Figure 2-5. Copying camera, setting-up details.
2-5
