Autoreduction optical plummet with liquid lens
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- Leningrad Mining Institute
Abstract
Modern optical theodolites are usually equipped with optical plumb bobs located on the alidade part or on the stand, which are used to center the theodolite over the top of the measured horizontal angle. ...
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References
- Gusev N.A. Surveyor-geodesic instruments and devices. Nedra, 1968.
- Zakharov A.I., Zuykov I.I. Theodolites of average accuracy and optical rangefinders. Nedra, 1965.
- Drodofsky M. Zeitschrift für Vermessungs. No. 4, 1960.
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