## Tables and Formulas for the Use of U.S. Surveyors and Engineers on Public Land Surveys: A Supplement to the Manual of Surveying Instructions |

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50 Dcececeace 8ine 8tatute miles 9 Difl 9 tt tt Altitude observation angle of Polaris angular measure Apparent altitude azimuths of Polaris c+fI cccecc Lat cccencec conversions without computation cosec Cosin Cotang culmination of Polaris date of observation Dcececeance Decl Di-s Di-sae.e Di-sance Di-sisce Diff dist Distance in chains dlst elev elongation of Polaris Ephemeris exsec Greenwich mean Greenwich meridian Hours Latitude IDecl is-e.ise isi-e.e.e. Lat latitude 40 Latitude set limbs lLat local mean longitude mean time hour mean time interval meridian Natural functions northerly hourly observation of Polaris p. m. observation Polaris at elongation reduction refraction s-e.nee set or assumed sidereal conversions sidereal hour angle sidereal time interval south declinations south point subtracted sun for apparent sun's center table of azimuths table of sidereal Tang treated as negative true latitude tt a tt tt tt tt upper culmination versin vertical angle