Geodetic Surveying And the Adjustment of Observations Method of Least Squares
The book Geodetic Surveying And the Adjustment of Observations Method of Least Squares was written by author Edward Lovering Ingram Here you can read free online of Geodetic Surveying And the Adjustment of Observations Method of Least Squares book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Geodetic Surveying And the Adjustment of Observations Method of Least Squares a good or bad book?
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If the instrument has three leveling screws it should be set with two screws parallel to the meridian and the bubble kept central with the remaining screw; if there are four leveling screws, place one pair in the meridian and hold the bubble central with the other pair. Time determined in the 182 GEODETIC SURVEYING above manner should not be in error by more than a second with an altazimuth instrument, nor by more than a couple of seconds with an engineer's transit. The above method is not adap...ted to precise time determina- tions, so that when the larger astronomical instruments are avail- able the observations are usually made on the stars. 103b. Star Transits with Engineering Instruments. The instruments used by the engineer for determining time by star transits may be the ordinary transit or the altazimuth instru- ments of Chapter III. The instrument (and striding level, if there be one) should be in good adjustment. The stars have no appreciable diameter, so that only one observation is obtained for each star.
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