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

Excerpt from 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

By an Altitude of the Sun, or a Star, out of the Meridian. The correct time of Observation being known.

By two observed Altitude. Of the Sun or a Star, and the interval of time between them; or the diference, or sum of their Azimuths.

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