Calibrate Dimensions task

With this task you can determine the physical dimensions of the participant's screen. The participant sees a gray rectangle on the screen. They should hold a bank card against the screen and adapt the size of the rectangle using the handles on its border. Please instruct your participant to adjust both the width and the height. Since most bank cards have the same dimensions, this allows us to determine the pixel density of the participant's screen, so that you can specify the stimulus dimensions of tasks coming after in absolute units (centimeters). The participant can submit their measurement by pressent the Enter key