The video shows a close-up of a person's hand, which is wearing a glove, as they work on a machine. The person is using a tool to adjust a part of the machine, and they are making precise movements to ensure that the adjustment is accurate. The machine appears to be complex, with various components and parts that the person is working on. The person's hand is steady, and they seem to have experience with the machine, as they are able to make adjustments with ease. The video does not provide any context or information about the machine or the person's identity.