The video shows a person using a caliper to measure the thickness of a phone screen. The caliper is placed on the screen and the person adjusts the caliper to get an accurate measurement. The screen appears to be about 2.19mm thick. The person's hand is visible, and they are wearing a ring on their finger. The background is white, and there is a ruler next to the phone screen. The caliper has a digital display that shows the measurement in millimeters.