Handy methods of geodetic astronomy for land surveyors (1921)
Gribble, Theodore Graham · London, J. D. Potter · leaf 27
on one of the vertical scales. In the diagram Fig. 8 the Azimuth J,, and Hour-Angle, K,,calculated from Equations 10 and 11, are found from intersectionssimilarly to the previous instructions. 26 Example. In Latitude 45° N., required the Altitude, Azimuth and Hour-Angleof Dubhe (a Urs. Maj.) at… … Fig. 7. Geodetic Astronomy, unless continuously in use, is very rapidly for-gotten. Some, who only have occasional use for it, are liable to besuddenly called upon to do so. The Graphic Representation of StellarPositions refreshes the memory more quickly than turning up the theoryin the text books.…
Geodesy · Surveying
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