Figure 5. Projector PH-637-/PFP,case open.
a corrupted fiberboard box. The entire box closure is scaled with
gunned Kraft tape.
b . E x p o r t S h i p m e n t . Projector PH-637(*) /PFP is packaged as
described above except that a desicant and a humidity indicator are
included within the corrugated fiberboard box. Next, it is wrapped
in a moisture-vaporproof barrier and heat sealed. Then, packaged
equipment is placed within a second waterproof carton sealed with
waterproof tape. This second carton is placed within a water-grease-
proof lined wooden shipping container. The lining is sealed with
waterproof tape and the wooden shipping container is nailed shut.
The shipping container is reinforced further by nailing two 3/4-inch
metal straps about 8 inches from each end.
9. Differences in Models
The differences between Projectors PH-637/PFP and PH-637A/
PFP are as follows-
a. Top of Projector Housing.
(1) The top of the PH-637A/PFP is a cover that contains a 10-
by 10-inch opening through which the glass top of the pro-
jection stage is visible. Aperture plates can be positioned
over the opening in the cover. Behind the opening is an
adjustable copy-holdin g device which may be adjusted to
hold different sizes of copying material. It also holds in
position the aperture plate holder. The projector cover is
hinged at the rear and, when raised, is held at a 45 angle
by a support arm. The roll attachment (par. 5d) and the
rear surface-mirror adjusting screws are accessible when the