In the video, a man is seen using a hydraulic pressure gauge to measure the pressure of a hydraulic system. The man is wearing a yellow hard hat and black gloves, indicating that he is likely a worker or technician. He is holding a handle attached to the hydraulic gauge, which he is using to adjust the pressure. The gauge itself is mounted on a metal bracket that is attached to a concrete wall. The man is seen turning the handle, which causes the needle on the gauge to move up and down, indicating the changing pressure levels. The video provides a close-up view of the gauge, allowing the viewer to see the needle's movement and the pressure readings clearly. The man's actions suggest that he is testing the hydraulic system's performance or checking its pressure levels.