preface to fifteenth edition

GENERAL INFORMATION, CONVERSION TABLES, AND MATHEMATICS 2.75
TABLE 2.9
Barometer Temperature Correction—Metric Units (Continued)
C. Correction of a barometer for capillarity (Smithsonian Tables)
Diameter
of tube,
millimeters
Height of meniscus in millimeters
0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
Correction to be added in millimeters
4 0.83 1.22 1.54 1.98 2.37 .... .... ....
5 0.47 0.65 0.86 1.19 1.45 1.80 .... ....
6 0.27 0.41 0.56 0.78 0.98 1.21 1.43 ....
7 0.18 0.28 0.40 0.53 0.67 0.82 0.97 1.13
8 .... 0.20 0.29 0.38 0.46 0.56 0.65 0.77
9 .... 0.15 0.21 0.28 0.33 0.40 0.46 0.52
10 .... .... 0.15 0.20 0.25 0.29 0.33 0.37
11 .... .... 0.10 0.14 0.18 0.21 0.24 0.27
12 .... .... 0.07 0.10 0.13 0.15 0.18 0.19
13 .... .... 0.04 0.07 0.10 0.12 0.13 0.14
TABLE 2.10 Barometric Latitude-Gravity Table—Metric Units
Smithsonian Tables.
The values in the table below are to be subtracted from the barometric reading for latitudes from 0 to 45
inclusive, and are to be added from 46 to 90.
Deg.
Lat.
Barometer readings, millimeters
680 700 720 740 760 780
mm. mm. mm. mm. mm. mm.
0 1.82 1.87 1.93 1.98 2.04 2.09
5 1.79 1.85 1.90 1.95 2.00 2.06
10 1.71 1.76 1.81 1.86 1.92 1.97
15 1.58 1.63 1.67 1.72 1.77 1.81
20 1.40 1.44 1.49 1.53 1.57 1.61
21 1.36 1.40 1.44 1.48 1.52 1.56
22 1.32 1.36 1.40 1.44 1.48 1.51
23 1.28 1.31 1.35 1.39 1.43 1.46
24 1.23 1.27 1.30 1.34 1.37 1.41
25 1.18 1.22 1.25 1.29 1.32 1.36
26 1.13 1.17 1.20 1.23 1.27 1.30
27 1.08 1.12 1.15 1.18 1.21 1.24
28 1.03 1.06 1.09 1.12 1.15 1.18
29 0.98 1.01 1.04 1.07 1.10 1.12
30 0.93 0.95 0.98 1.01 1.04 1.06
31 0.87 0.90 0.92 0.95 0.98 1.00
32 0.82 0.84 0.86 0.89 0.91 0.94
33 0.76 0.78 0.80 0.83 0.85 0.87
34 0.70 0.72 0.74 0.76 0.79 0.81
35 0.64 0.66 0.68 0.70 0.72 0.74
36 0.58 0.60 0.62 0.64 0.65 0.67
37 0.52 0.54 0.56 0.57 0.59 0.60
38 0.46 0.48 0.49 0.51 0.52 0.53