Abstract

This paper investigates the accuracy of three quantities which are of importance in radial triangulation: the rhomboid closure, the scale transfer and the azimuth transfer. It is concluded that, assuming reasonable values for the initial sources of errors, the following standard values are to be expected, if the sise of the photographs is 9 × 9 inch and the longitudinal overlap 60%: (a) Standard rhomboid closing error: 0,092% or 0,00040 units of the decimal logarithms. (b) Standard error of the scale transfer: 0,025% (c) Standard error of the asimuth transfer: 0', 65 = 1, 2 cgr.

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