The video shows a person using a digital caliper to measure a piece of metal. The caliper is held in the person's left hand, and the metal piece is held in the right hand. The person adjusts the caliper's jaws to fit around the metal piece, and then presses a button to take a measurement. The digital display on the caliper shows the measurement in millimeters. The person repeats this process several times, taking multiple measurements of the metal piece.