<p>This study evaluates the results of an interlaboratory comparison between two Turkish Standards Institution (TSE) calibration laboratories in the field of vacuum pressure gauge calibration. The goal was to assess measurement consistency and harmonization between the TSE Gebze and TSE Bursa calibration laboratories. The comparison focused on pressure measurements at various points, and the <i>E</i>_n values calculated for these measurements were all below 1, indicating that the results from both laboratories were closely aligned. This confirms that both laboratories employed accurate and consistent measurement techniques, reinforcing the reliability of their calibration processes. The results demonstrate the crucial role of interlaboratory comparisons in ensuring high-quality measurements, validating the technical competence of the laboratories, and supporting the harmonization of metrological practices.</p>