A fundamentally new method has been developed to assess the compliance of the metrological characteristics of high-precision, precision and technical levels immediately before performing engineering and geodetic work of various levels of complexity, based on measuring the deviation of the sighting axis of the leveling telescope from the horizon plane using a high-precision tacheometer instead of leveling rails. Thus the developed method, in comparison with the existing one, increases the accuracy of measuring the actual values of the level characteristics by eliminating a number of additional errors caused by the disadvantages of the currently used method (the error of pointing and de-counting from the leveling rail, the error of measuring the height from the ground to the eyepiece of the level, the error of measuring the distance between the level and the rail). In addition, the new method reduces labor intensity by conducting a check by determining metrological characteristics using direct measurements without using leveling rails, and also reduces the time for adjusting (repairing) faulty levels several times due to the quality of the adjustment operations performed. In the future, the developed new method will find wide application in the preparation of levels of various accuracy groups before carrying out engineering and geodetic work.
Konyuhov et al. (Fri,) studied this question.