(c) Install the opal glass in the rear of the easel; use the easel
easel with the photographic mask or masks (a above).
(2) Nonstandard size.
(a) Follow the procedures in (l)(a) and (b) above.
(b) Install the opal glass in the front of the easel; use the easel
23. The easel has five different masks sizes.
Identify the five mask
ANS: __________, __________, __________, __________,
The three types of material that can be mounted on the easel are