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107450010000020_0
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A description of instruments used by Surveyors. The Pentagraph Proportional Compasses Perambulator Circumferenter Plane Table Semi-Circle Theodolites, four Sorts. Parallel Protractor. The practical method of finding the altitudes and distances of terrestrial objects. Land surveying, by the Chain, Plane Table and best Theodolite. Levelling, and the method of dividing land, by J. Waddington, Land Surveyor.
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