Hold the transparent plate on the meter dial and turn the projection
until the camera type appears in the camera type indicator. "PFb"
indicates PELLIX QL or FTb and the "F" indicates the
FT. (Some older boosters may have been made before the FTb was
available. For these older boosters, the camera types will be "P"
or "F", which correspond to the PELLIX or FT.)
6.
Hold the outer ring of the dial and turn the projection until the speed
of the film that you will be using appears in the indicator window.