Canon FTb Instructions Manual page 11

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Meter Needle
Sufficient
Insufficient
eM
ust be
replaced)
Battery Check
Check the power level of the mercury battery after loading
it.
1
Set the film speed
scale
at ASA 100 and the shutter
speed dial at" 1000".
For setting the film speed, lift
up the outer ring of the shutter speed dial and turn
.
(See
page 19.)
• A correct check cannot be made if other settings are
used.
2
Turn the meter switch
,
on the outer side of the film
rewind
crank,
to the" C" index.
3
If the meter needle inside the viewfinder swings to the
meter index, the battery has sufficient power.
If the
needle stays below the meter
index,
voltage is insufficient
and the battery must be replaced.
• When removing your finger from the meter switch, it will
automatically return to the "OFF
"
index from" C
".
• Life of the battery
in
normal use is approximately one
year.
11

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