Reliability of geodetic networks is considered in the article from the position of its practical application. It is proposed to expand the notion of "reliability of geodetic network", namely to consider the possibility or impossibility of detecting a gross error in every measurement without exception as the main parameter of reliability. The role of the coarse error detection method is shown; it is argued that of all known methods of searching for coarse measurement errors only the method of overlaying correction plots gives the most complete information about the coarse measurement errors in a particular geodetic network.
