Doctoral Theses "Research on vacuum gauge testing methodology” represents developed model of operations for vacuum gauge examination to achieve stable and precise nano-coating process, good coating visual state and properties. To achieve this goal experimental inspection vacuum system was build. This system provides vacuum gauge multifunctional examination and achieves high vacuum up to 2 × 10−6 Torr at very short period of time (≈ 20 min.). Vacuum system pumping mathematical modeling was conducted using OCTAVE software. Vacuum gauge experimental inspection research showed that pressure measuring accuracy is low at certain diapason, therefore, zero adjustment must be performed. Conducted SiO2 nano-coating deposition processes results showed that pressure deviations significantly influence coating properties and quality. SiO2 nano-coating transmission coefficient and thickness prediction models were carried out using fuzzy logic. Vacuum gauge inspection methodology was created on the basis of conducted experimental research and obtained data. The thesis is written in Latvian, contains an introduction, six chapters, conclusions, references, 2 appendix, 69 figures, 38 tables, 106 pages. The list of references has 74 sources.