The aim of this paper is to demonstrate quality assurance of pressure gauge calibration results up to 2 MPa (20 bar) designed through interlaboratory comparison. The first part of the paper encompassed a review of standards and guidelines for conducting interlaboratory comparisons, including statistical methods for evaluating calibration results. Also, the calibration procedure according to method B from DKD-R 6-1 guidelines, which was used in all laboratory measurements, was explained, and the basic equation for calculating the effective pressure of the pressure balance with the application of certain corrections was presented. The experimental part of the paper was conducted at the Laboratory for Process Measurements of the Faculty of Mechanical Engineering and Naval Architecture in Zagreb. Using existing standards, a measurement line for calibrating pressure gauges was assembled and described. The selected transfer standard for interlaboratory comparisons, the FLUKE 2700G pressure gauge, was calibrated on the standard system and delivered to four laboratories that participated in the interlaboratory comparison: FSB-LPM as a coordinator, LAB 1 (ARDENTER), LAB 2 (Endress+Hauser) and LAB 3 (remained anonymous for data privacy reasons). The criterion for result acceptability was the calculated E_n value, and the results were presented in tables and graphs for all comparison points.