In the video, a person is seen using a ruler to draw lines on a piece of cardboard. The person's hands are visible, and they are holding a black marker. The cardboard is placed on a white surface, and the person draws straight lines across the cardboard. The ruler is red and white, and the person uses it to ensure that the lines are even and straight. The person's movements are deliberate and precise, indicating that they are experienced in this task. The video does not show the person's face or any other part of their body, focusing solely on the task at hand.