g. Easel.
The easel is hinge mounted on the front end and includes an
opal glass secured within the easel frame.
This is used when copying
transparent material, by placing an illuminating light source behind the easel.
Five interlocking photographic masks, (fig 1-48), are supplied to hold copy to
the glass frame. Both the glass frame and the masks use clips to secure copy,
or the next smaller mask, to the easel.
A calibrated mounting plate ((2)
below) mounted on a sponge rubber padded mounting board, and two glass plates,
are also part of the easel.
h. Masks.
Five standard size interlocking masks, ranging in size from
3x4-inches, 4x5-inches, 5x7-inches, 8x10-inches to 11x14-inches, are used to
exclude extraneous light from the camera lens. The large mask can be used by
itself to frame an object on the easel. When a smaller mask is used, however,
it must be mounted within the next largest mask. Thus, when the smallest mask
(3x4-inch) is used, all masks must be mounted on the easel.
(1) Mounting plate.
The mounting plate is used to provide copy
support on the easel.
The mounting plate has a white imprinted scale
calibrated in inches, and a border imprinted for 8x11-inch and 8x14-inch
sheets.
48
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