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![]() TM 9-6685-202-14, C1
calibrating altimeters by using an altitude to pressure
equivalent of any altitude from -1000 to + 80,000 feet.
conversion table. Table 3-2 contains the pressure
Table 3-2. Altitude to Pressure Conversion
Altitude
Pressure
Altitude
Pressure
Altitude
Pressure
(feet)
in. Hg
mm Hg
(feet)
in. Hg
mm Hg
(feet)
in. Hg
mm Hg
-1000
31.0185
787.869
3100
26.7179
678.635
7300
22.8264
579.791
-900
30.9073
785.045
3200
26.6194
676.133
7400
22.7397
577.588
-800
30.7965
782.231
3300
26.5211
673.636
7500
22.6532
575.391
-700
30.6859
779.421
3400
26.4232
671.149
7600
22.5670
573.202
-600
30.5757
776.622
3500
26.3256
668.670
7700
22.4811
571.020
-500
30.4659
773.833
3600
26.2283
666.199
7800
22.3955
568.846
-400
30.3563
771.050
3700
26.1312
663.732
7900
22.3101
566.677
-300
30.2471
768.276
3800
26.0345
661.276
8000
22.2250
564.515
-200
30.1382
765.510
3900
25.9380
658.825
8100
22.1401
562.359
-100
30.0295
762.749
4000
25.8418
656.382
8200
22.0555
560.210
0
29.9212
760.000
4100
25.7460
653.948
8300
21.9712
558.068
100
29.8132
757.258
4200
25.6504
651.520
8400
21.8871
555.932
200
29.7056
754.522
4300
25.5551
649.100
8500
21.8033
553.804
300
29.5982
751.797
4400
25.4600
646.684
8600
21.7197
551.680
400
29.4913
749.079
4500
25.3653
644.279
8700
21.6364
549.565
500
29.3846
746.369
4600
25.2709
641.881
8800
21.5534
547.456
600
29.2782
743.666
4700
25.1767
639.488
8900
21.4706
945.353
700
29.1721
740.971
4800
25.0828
637.103
9000
21.3881
543.258
800
29.0663
738.284
4900
24.9892
634.726
9100
21.3059
541.170
900
28.9608
735.604
5000
24.8959
632.356
9200
21.2238
539.085
1000
28.8557
732.935
5100
24.8029
629.994
9300
21.1421
537.009
1100
28.7508
730.270
5200
24.7101
627.637
9400
21.0606
534.939
1200
28.6462
727.616
5300
24.6177
625.290
9500
20.9794
532.877
1300
28.5421
724.969
5400
24.5255
622.948
9600
20.8984
530.819
1400
28.4382
722.330
5500
24.4336
620.613
9700
20.8177
528.770
1500
28.3345
719.696
5600
24.3420
618.287
9800
20.7372
526.725
1600
28.2312
717.072
5700
24.2506
615.965
9900
20.6569
524.685
1700
28.1282
714.456
5800
24.1595
613.651
10000
20.5770
522.656
1800
28.0255
711.848
5900
24.0687
611.345
10100
20.4972
520.629
1900
27.9231
709.247
6000
23.9782
609.046
10200
20.4178
518.612
2000
27.8210
706.653
6100
23.8880
606.755
10300
20.3385
516.598
2100
27.7193
704.070
6200
23.7980
604.469
10400
20.2596
514.594
2200
27.6178
701.492
6300
23.7083
602.191
10500
20.1808
512.592
2300
27.5166
698.922
6400
23.6189
599.920
10600
20.1024
510.601
2400
27.4157
696.359
6500
23.5298
597.657
10700
20.0241
508.612
2500
27.3151
693.804
6600
23.4405
595.399
10800
19.9461
506.631
2600
27.2148
691.256
6700
23.3521
593.148
10900
19.8684
504.657
2700
27.1148
688.716
6800
23.2640
590.906
11000
19.7909
502.689
2800
27.0152
686.186
6900
23.1755
588.668
11100
19.7137
500.728
2900
26.9158
683.661
7000
23.0881
586.438
112Q0
19.6367
498.772
3000
26.8167
681.144
7100
23.0006
584.215
11300
19.5599
496.821
7200
22.9132
581.998
3-16
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