## A Collection of Tables and Formulae Useful in Geodesy and Practical Astronomy, Including Elements for the Projection of Maps |

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30 Inches altitude apparent assumed Astronomical axis azimuth Barometer base central Co-ordinates compute convert correction corresponding declination deflecting denote determined Diff difference division east English English inches Equal Altitudes Equations error expressed Fahrenheit's feet foot formula found by moving French given greater horizontal hour angle inches inclination Intermediate minutes interval known latitude length less lines Long Longitude lower magnet mean noon mean solar measure meridian method metre middle miles minus minutes minutes and seconds moon's normal object Obs'd observed obtained parallax parallel pole preceding proportion quantities R. A. in Arc radius readings reduce refraction represent result Right Ascension scale seconds side sidereal standard star station sun's Table taken tang temperature term Thermometer tion transit true unit upper weight wire Yards zenith distance