Surely at one point this law served some purpose – maybe back when people knew what roentgen rays were. But now? It seems unlikely, though RCW 70.98.170 (Prohibition — fluoroscopic x-ray shoefitting devices) is still on the books in Washington. It reads as follows:
The operation or maintenance of any X-ray, fluoroscopic, or other equipment or apparatus employing roentgen rays, in the fitting of shoes or other footwear or in the viewing of bones in the feet is prohibited. This prohibition does not apply to any licensed physician, surgeon, *podiatrist, or any person practicing a licensed healing art, or any technician working under the direct and immediate supervision of such persons.
You’ll find the law here.