Usage
Use of an Abney level is discussed in volume 12 of the Forest Quarterly1 published by the New York State College of Forestry in 1914. Discussion on the use of the Abney level starts on page 370.
Read more about this topic: Topographic Abney Level
Famous quotes containing the word usage:
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—Fran Lebowitz (b. 1951)
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—A.J. (Alfred Jules)
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Might be filled up, as vainly as before,
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The loftiest minds outrun their tardy ages.”
—George Gordon Noel Byron (1788–1824)