Why Did Kids Put Their Feet in X-Ray Machines? The shoe-fitting fluoroscope, also known as a pedoscope, was an X-ray fluoroscope machine commonly installed in shoe stores from the 1920s until about the 1970s. It allowed customers, especially children, to view the bones of their feet inside shoes in real time, helping assess whether the shoes fit properly. Marketed as a modern, scientific tool for better shoe fitting, it became a popular feature in stores across Europe and North America. However,