Abstract
The urgency of research on the issues of substantiating the requirements for the accuracy of measurements of linear dimensions has substantiated. The main differences between the means for measuring external and internal dimensions have formulated. The factors influencing the choice of measuring instruments have considered. Specific additional measurement errors associated with the alignment of the measurement line with the hole diameter have described. A comparative analysis of the possibility of using various types of bore gauge to control the internal dimensions of holes during machine repair has carried out. The results of an experimental evaluation of the components of the measurement error of a two-point bore gauge have presented. The criterion for the selection of measuring instruments for measuring the holes of objects of maintenance of machinery and equipment has been substantiated. Recommendations have given aimed at improving the accuracy of measuring the holes of parts during the repair of machinery and equipment.
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