FIGURE 2-9.
Easel, Projection Printing FN-9(1).
i. Projection lens sets (figure 2-10).
Three projection lens sets,
having focal lengths of 2, 3 1/2, and 5 3/8 inches, are supplied with the
printer.
Each lens board has been cut off at two diametrically opposed
sides of the top to permit bayonet-type mounting, and each is equipped with
a bracket on which the red filter assembly can be mounted by a knurled
screw.
FIGURE 2-10.
Projection lens sets.
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