At present, nomographic methods are increasingly used in engineering practice. As a highly convenient computational tool for calculations based on ready-made formulas, nomograms make it possible to significantly reduce calculation time and quickly solve required problems with sufficient practical accuracy. The main advantage of nomograms as a computational apparatus is the speed of calculations. Another important benefit is that they allow one to quickly obtain a numerical solution of a nomographed equation with respect to any variable involved and to flexibly vary input data in order to obtain the desired result in the required units. In most cases, using a nomogram only requires careful reading of the instructions provided in the text or even just studying the usage diagrams presented on the nomogram sheets.

The article analyzes the application of practical nomography in various engineering, scientific-technical, and technological calculations. Methods of practical nomography are considered for processing research results aimed at determining the optimal properties of multifunctional polymer composite lubricants. The paper describes the use of Gibbs triangles for analyzing the required characteristics of composite lubricants and shows that practical nomography methods make it possible, with sufficient accuracy, to select the concentrations of components in multicomponent lubricants depending on their properties.