TM 55-1510-221-10
TABLE 3-2. VARIOUS VALUES FOR UTM GRID COEFFICIENTS
SPHEROID
International
Clark 1866
Clark 1880
Everest
Bessel
Modified Everest
Australian National
Airy
Modified Airy
SOURCE: Universal Transverse Metcator
Grid Technical Manual,
TM 5-241-8, Headquarters,
Department of the Army,
30 April 1973, page 4.
Flatness Coefficient: 100 (I/f)
Relative Radius: a-6,3700.000
FLATNESS
RELATIVE
COEFFICIENT
RADIUS
29700
8388 m
29498
8206 m
29346
8249 m
30080
7276 m
29915
7397 m
30080
7304 m
29825
8160 m
29932
7563 m
29932
7340 m
an extra precision display
related to resident value of
northing and easting, to the
nearest meter, appears in left
and right data displays,
respectively.
8.
To load extra precision east-
ing value - Press keys in
sequence starting with “E“.
Example: 297 m East = E
297. Observe that easting
meters appear in the right
data display as keys are
pressed.
tiate the entry. The normal
entry establishes the hemi-
sphere.
11.
INSERT/ADVANCE push-
button - Press. Within 3 sec-
onds
computer
converts
input into latitude and longi-
tude for storage in memory.
The stored value is again
converted to UTM for dis-
play.
The
INSERT/
ADVANCE pushbutton light
extinguishes.
Conversion
routines may cause displays
to change by up to 10 m.
NOTE
9. INSERT/ADVANCE push-
button - Press. Observe
pushbutton light remains
illuminated.
10. To load extra precision
northing value - Press keys
in sequence, starting with
“N” or “S“. Example: 901 m
North = N 901. Observe
that northing meters appear
in left data display as keys
are pressed. The value is
always added to the normal
value regardless of which
key (N/S) is pressed to ini-
The computer will convert coordinates in
overlap area; however, data display values
will reference appropriate zone.
NOTE
The “W“ key may be used to initiate east-
ing entries; however, the computer will
always interpret such entries as an “E“
input. “E“ will be displayed in normal
UTM data display.
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