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Pressure Corrections
Temperature and Gravity Corrections 6
6-3
Explanation of Nomogram
A straight line passing through the known values of altitude (H)
and latitude (L) of the site of the DWT, when extended to scale
‘g’, will indicate the approximate value of ‘g’.
L
85
80
75
65
90
60
50
70
45
30
20
35
40
55
5
25
15
0
10
9.765
9.78
9.80
9.77
9.82
9.79
9.83
9.81
g
METRES
14000
12000
10000
8000
6000
4000
2000
0
FEET
0
H16000
glf12.eps
Figure 6-2. Nomogram for Finding the Value of "g" from Altitude and Latitude
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