Outline of the Method of Conducting a Trigonometrical Survey, for the Formation of Geographical and Topographical Maps and Plans: Military Reconnaissance, Levelling, Etc.; with the Most Useful Problems in Geodesy and Practical Astronomy, and Formulæ and Tables for Facilitating Their Calculation |
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Common terms and phrases
accuracy accurate Additives adjustment altitude angle apparent applied approximate ascertained axis azimuth barometer base boundaries calculated centre chronometer circle computed considerable construction contents contours correction course depression described detail determined difference direction distance divisions drawn earth elevation equal error evidently feet field figure fixed given gives ground half height hills horizontal inches instrument interval known laid land latitude laying length longitude marked mean measured meridian method miles minute moving nature nearly necessary object observed obtained operation Ordnance Survey parallax parallel plane plate plotted portion position practical proportion reading reference reflecting refraction represented roads scale screw sidereal sides sketch staff star stations surface survey Table taken taking telescope temperature theodolite thermometer tion traced triangles trigonometrical true vertical wire zenith
Popular passages
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