Abstract
THE ‘Wild precision theodolite’—a light-weight-type of primary triangulation instrument—is well known for the ingenuity and compactness of its design as well as for the superb workmanship exhibited in its construction. The couplings of the instrument mechanism, however, are designed on machine tool principles, and although the tolerances on the cylindrical fits of the axes are very small, a recent investigation by J. L. Rannie and W. H. Dennis1 of the Geodetic Survey of Canada, Department of the Interior, Ottawa, has shown that the performance of a number of these instruments was not satisfactory.
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References
"Improving the Performance of Primary Triangulation Theodolites as a result of Laboratory Tests”, Canadian J. Research, 10, 347; 1934.
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POLLARD, A. Design of Theodolite Axes. Nature 134, 420–421 (1934). https://doi.org/10.1038/134420c0
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DOI: https://doi.org/10.1038/134420c0
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