TM 5-3610-220-14
presist, breathe lightly on the lens and wipe lightly with a
a. General. The 24 inch Goerz apothromat Artar
clean lens tissue. Discard tissue after each use. Inspect the
process lens is equipped with a lens cap (2, fig. 2-12), a
lens thoroughly for scratches, broken or bent diaphragm
detachable lens mounting plate (6), and a lens box (1). A
opening control, and damaged barrel. If lens is defective,
holding ring within the lens mounting plate is used to lock the
regardless of how slight the damage, report the condition to
lens firmly in operating position. The diaphragm opening
the proper authority. If internal lens surfaces are stained or
control (4) is a ring attached on the barrel of the lens.
dirty, or inner elements are loose, also report condition to the
proper authority to obtain qualified servicing. Do not attempt
mounting plate (6, fig. 2-12) 15 degrees in a counterclockwise
to disassemble lens, as the components are critically spaced
direction to release it from the inner lensboard frame (4, fig. 2-
and
aligned, and the lens elements may distort under excessive
pressure.
CAUTION: Never use any solution on the lens and
c.
never oil the diaphragm or other lens mechanism.
2-35. c. (2).
2-35. c. (1).
3-11. Lens, 24 Inch
Section VII. MAINTENANCE OF COUNTER SAFETY LIGHTS
mounted on the counter platform over the counters to provide
3-12. General
illumination under darkroom conditions. Upon failure of these
The copyboard and lensboard positioning counters are
lamps the operator should notify the proper authority for their
equipped with shielded safety lamps (7, fig. 1-3) on the
immediate replacement.
darkroom side of the camera back. These lamps are
3-6
