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Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
TABLE II. STADIA CORRECTION AND HORIZONTAL DISTANCES
STADIA REDUCTIONS FOR READING 100
Vertical Angle | Horizontal Correction | Difference in Elevation | Vertical Angle | Horizontal Correction | Difference in Elevation
2°-00' | 0.1 | 3.5 | 18°-30' | 10.1 | 30.1
3°-00' | 0.3 | 5.3 | 19°-00' | 10.6 | 30.8
4°-00' | 0.5 | 7.0 | 19°-30' | 11.2 | 31.5
5°-00' | 0.8 | 8.7 | 20°-00' | 11.7 | 32.1
6°-00' | 1.1 | 10.4 | 20°-30' | 12.3 | 32.8
7°-00' | 1.5 | 12.1 | 21°-00' | 12.8 | 33.5
8°-00' | 1.9 | 13.8 | 21°-30' | 13.4 | 34.1
9°-00' | 2.5 | 15.5 | 22°-00' | 14.0 | 34.7
10°-00' | 3.0 | 17.10 | 22°-30' | 14.7 | 35.4
10°-30' | 3.3 | 17.9 | 23°-00' | 15.3 | 36.0
11°-00' | 3.6 | 18.7 | 23°-30' | 15.9 | 36.6
11°-30' | 4.0 | 19.5 | 24°-00' | 16.5 | 37.2
12°-00' | 4.3 | 20.3 | 24°-30' | 17.2 | 37.7
12°-30' | 4.7 | 21.1 | 25°-00' | 17.9 | 38.3
13°-00' | 5.1 | 21.9 | 25°-30' | 18.6 | 39.0
13°-30' | 5.5 | 22.7 | 26°-00' | 19.2 | 39.4
14°-00' | 5.9 | 23.4 | 26°-30' | 19.9 | 39.9
14°-30' | 6.3 | 24.2 | 27°-00' | 20.6 | 40.5
15°-00' | 6.7 | 25.0 | 27°-30' | 21.3 | 41.0
15°-30' | 7.2 | 25.8 | 28°-00' | 22.0 | 42.0
16°-00' | 7.6 | 26.5 | 28°-30' | 22.8 | 41.9
16°-30' | 8.1 | 27.2 | 29°-00' | 23.5 | 42.4
17°-00' | 8.5 | 28.0 | 29°-30' | 24.3 | 42.9
17°-30' | 9.0 | 28.7 | 30°-00' | 25.0 | 43.3
18°-00' | 9.5 | 29.4 |
Chains to Feet | Feet to Chains
1 ......... 66 | 100 ..... 1.515
2 ........... 132 | 200 ..... 3.030
3 ........... 198 | 300 ..... 4.545
4 ........... 264 | 400 ..... 6.060
5 ........... 330 | 500 ..... 7.575
6 ........... 396 | 600 ..... 9.090
7 ........... 462 | 700 ..... 10.606
8 ........... 528 | 800 ..... 12.121
9 ........... 594 | 900 ..... 13.636
10 ......... 660 | 1,000 .... 15.151