In the video, we see a person's hands working on a piece of machinery. The person is using a tool to measure the diameter of a metal rod. The tool is a caliper, which is used to measure the distance between two points. The person is holding the caliper against the rod and adjusting it to get an accurate measurement. The rod appears to be made of steel and has a threaded end. The background is a workbench with various tools and parts scattered around. The person's hands are steady as they take the measurement, indicating that they are experienced in this task.