Angle Measurement—Transits and Theodolites
Three dimensions or combinations thereof must be measured to locate an object with reference to a known position: (1) horizontal length, (2) difference in height (elevation), and (3) angular direction. This chapter discusses the design and uses of surveyors’ transits and theodolites to measure horizontal and vertical angles.
KeywordsAngle Measurement Zenith Angle Lower Plate Angular Measurement Vertical Circle
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