b. Carriages. The front and rear carriages (figure 1) are castings
that are secured to the front and rear frames respectively. The carriages
house the camera movement and locking mechanisms, and the slides that ride
on the tubular guide rails.
FIGURE 1. Camera set, set up for horizontal operation, rightfront view.
c. Camera focusing backs. Two focusing backs are provided with the
camera set.
(1) 4" x 5" focusing back. The 4" x 5" focusing back is
interchangeable with the 8" x 10" focusing back [(2) below]. The focusing
panel shield (figure 2) is secured within the focusing back by two springs.
A ground focusing glass is mounted within the focusing panel shield.
Horizontal and vertical lines on the ground focusing glass provide a scale
to align the image.
2
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