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Eccentricity of the Sextant by Frederic Furbish, 1893

Eccentricity of the Sextant by Frederic Furbish, 1893, Page 124

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May 6, 1893 No. 58 Observations for the Index Error of [Pistor?] and Martins' Sextant No. 254. Observer L.G.W. On Arc 0° 30' 00" 30' 00" 29' 50" 30' 00" 30' 05" 30' 10" -------------- 6 ) 180' 5.00["?] -------------------- 30' 0.833["?] Off Arc 359° 27' 10" 26' 50" 27' 00" 27' 25" 27' 05" 26' 50" -------------------- 6 ) 359° 162' 20" ----------------------- 359° 27' 3.3.3["?] +32' 56.666["?] I = -30' 0.833" + 32' 56.66" = +1' 27.916" = +1' 28" B = 29.39 [illegible: in? or m?] T[subscript]i[/subscript] = 68.5° T[subscript]ε[/subscript] = 62.5°
 
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