1. In December 1942, the magnetic bearing of a boundary line was measured to be N...
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1. In December 1942, the magnetic bearing of a boundary line was measured to be N 42-30-15 W. The magnetic declination in December 1942 was 12-30-00 E. If the magnetic declination today is 8-45-00 W, what is the magnetic bearing of the line today? 2. A line on a survey plat is indicated to have a magnetic bearing of S 38-24-30 W. The magnetic declination at the time of survey is not shown on the plat. Today the magnetic bearing of the same line is found to be S 40-06-00 W. If today's magnetic declination is 4-42-00 W, and assuming that the earlier surveyor did the work correctly, what magnetic declination did the previous surveyor use? 4. Visit the website www.ngde.noaa.goy and answer the following questions: A. What was the total difference in magnetic declination between Boston, MA & San Francisco, CA on January 1", 2000? B. What was the magnetic declination on November 27, 1982 on Sullivan's Island, South Carolina? (Hint: you may need to look up zip code) 5. Explain why the letters E and W on a surveyors compass are reversed from their normal positions. 1. In December 1942, the magnetic bearing of a boundary line was measured to be N 42-30-15 W. The magnetic declination in December 1942 was 12-30-00 E. If the magnetic declination today is 8-45-00 W, what is the magnetic bearing of the line today? 2. A line on a survey plat is indicated to have a magnetic bearing of S 38-24-30 W. The magnetic declination at the time of survey is not shown on the plat. Today the magnetic bearing of the same line is found to be S 40-06-00 W. If today's magnetic declination is 4-42-00 W, and assuming that the earlier surveyor did the work correctly, what magnetic declination did the previous surveyor use? 4. Visit the website www.ngde.noaa.goy and answer the following questions: A. What was the total difference in magnetic declination between Boston, MA & San Francisco, CA on January 1", 2000? B. What was the magnetic declination on November 27, 1982 on Sullivan's Island, South Carolina? (Hint: you may need to look up zip code) 5. Explain why the letters E and W on a surveyors compass are reversed from their normal positions.
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Related Book For
Elementary Surveying An Introduction to Geomatics
ISBN: 978-0273751441
13th Edition
Authors: Charles D. Ghilani, Paul R. Wolf
Posted Date:
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