TM 5-6675-325-14
b.
Mount tracer arm extension assembly.
(1) Remove desired lengths of tracer arm extension from case.
CAUTION
Do not release hold on planimeter when tracer arm is removed. Planimeter
will turn on its side.
Damage to planimeter disk may occur.
(2) Loosen two thumbscrews at back of tracer arm.
(3) Hold tracer arm with one hand.
With other hand, slide tracer arm out of
planimeter base.
(4) While still holding planimeter, slide one end of extension arm into
tracer arm slot on planimeter base.
Move extension arm until groove in end lines up
with view hole
Different
loosening
in tracer arm slot.
NOTE
tracer arm lengths with same tracer arm can be obtained by
two thumbscrews and sliding tracer arm in and out of its
slot.
Tracer arm lengths should be premarked short, medium, or long.
If any other tracer arm length is desired, planimeter must be realined.
(5) Tighten two thumbscrews to secure tracer arm extension. Be sure lens
tracing assembly is flat on table surface.
(6) Readjust encoder and remote tracer switch wires through antenna.
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