Checking The Batteries - Nikon Photomic FTN Finder Instruction Manual

CHECKING THE BATTERIES
The Photomic FT N Finder is powered by two 1.3 volt
mercury batteries located in the battery chamber on the
bottom of the finder. To check the batteries, press the meter
switch-off button and observe the needle in the window on
top of the finder. If the needle swings to the center circle or
beyond , the batteries are in good condition. The two mercury
batteries come installed with the Photomic FT N Finder.
To
replace weak or worn·out batteries, unscrew the cap over
the battery chamber using a coin or key and th e batteries
will drop ou
t.
Make sure that the positive
(+)
side faces out
when new batteries are installed .
Caution : Never throw discarded batteries into a fire as they
wi ll explode when heated.