The research is devoted to a dedicated test bench for comprehensive testing of multi-rotor drones and experimental determination of the main tactical and technical characteristics of this test bench. Its main element is a three-stage gimbal rig with modular architecture, equipped with LPD3806-600BM-G5 precision optical encoders and a MinIMU-9 v5 inertial unit. The test bench provides high-precision measurement of angular positions, velocities, accelerations, and vibrations in real time. The software implements data collection, filtering (complementary filter, Kalman filter), visualization, and automated analysis of the drone's dynamic characteristics. A detailed description of the test bench architecture is provided, and the results of test trials to determine the main technical characteristics are presented. The accuracy of angle measurement with a resolution of up to 0.1° and a data update frequency of up to 100 Hz has been experimentally confirmed. Simulation of uniformly accelerated motion of the gimbal rig proved the adequacy of the measuring system and data processing algorithms to theoretical expectations. The test bench is an effective tool for diagnostics, calibration, and reliability improvement of multi-rotor UAVs, particularly in conditions that simulate real operation.