TM 5-6675-325-14
NOTE
Factory determined R T value is given on Calibration Records Sheet
provided with equipment. Alinement is performed as a check.
(6) Manually calculate alinement, CA, using the following equation.
CA
= S c2 x u
S C2 = Scale ratio squared (given on map being measured or determined by
equation in paragraph 5-6.2q).
u
= Value of one planimeter unit (factory determined value provided on
Calibration Records Sheet provided with equipment.
(7) Enter three most significant digits of alinement constant, C , into auto-
scaler using scaler dials.
A
(a) Set first most significant digit on left hand dial.
(b) Set second most significant digit on middle dial.
(c) Set third most significant digit on right hand dial.
Example:
If CA is 10.571, left hand dial should read 1, middle dial should
read 0, and right hand dial should read 5.
(8) Set decimal selector according to value of first significant digit of
alinement constant.
NOTE
Decimal selector sets decimal place for auto-scaler LED display.
If constant is one or greater, set decimal selector to 0.
If constant is less than one, set decimal selector according to place
value of first significant digit.
(9) Place planimeter near shape to remeasured so that length of tracer arm
lies along imaginary line through center of shape.
(10) Set wheels so that their axles form 90 degree angle.
(11) Make practice trace to be sure tracer arm will cover area.
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