There are three people in the image. The person on the left is wearing a white shirt and appears to be standing close to a wall. The person in the middle is dressed in a dark-colored outfit and is positioned slightly behind the first person. The person on the right is also dressed in a dark outfit and is standing further back from the other two individuals. All three appear to be engaged in an activity that involves some sort of measurement or comparison, as indicated by the objects they are holding.