TM 5-6675-325-14
(7) Hold tracer arm in place and turn wheels on planimeter so that wheel axle
forms 90 degree angle with tracer arm.
(8) Press point of Y-shaped test rule into paper on horizontal line.
(9) Place lens tracing assembly so that recessed end of Y-shaped test rule
rests against edge of lens.
(10) Press edge of lens so that it rides against inside edges of test rule
recess.
(11) Clear auto-scaler by pressing and releasing foot switch.
NOTE
If planimeter is allowed to slip, area measured will not be actual area
of test rule, and results will be inaccurate.
(12) Keep lens firmly pressed against test rule. Slowly trace 360 degree
circle by moving lens around center of test rule.
Stop when you return to starting
point.
(13) Repeat steps 9 through 12 four times.
Reposition test rule at different
point on line after three measurements.
(14) Average the pulse counts shown on the LED display after test measurement
to obtain RT value.
l
NOTE
If QPS is being initially alined with premarked tracer arm lengths compare
average RT value to RT value found on calibration Record Sheet provided
with equipment.
Move lens tracer in 1/4 inch increment to bring “RT value” within RT value
found on Calibration Record Sheet provided with equipment.
If average RT value is not within ±0.2% of factory determined RT value,-
the planimeter may be defective. Repeat alinement procedure. Notify
direct/general support maintenance for service or replacement.
If using preprogrammed cards, manual calculation of CA calibration constant)
is not necessary.
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