sorry to rain on your parade ''krystal''. But they where called shoe fitting flouroscopes or x ray fitters. they put out 20-75 Rems per min. thats EXTREMELY dangerose. far more than the half a second of 20 MILLIREMS which is safe for simple arm x ray
those machines also had only a aluminum filter for image quality. that means junior, mom ,and a salsperson where all being exposed all over. Try watching moder marvels engineering disasters #18 which tells about the machines in that epesode. using one of those machines has the effect of standing on an x ray tube with no sheilding