Hello, I was going through some old stuff in my office (I do event tech for bands/comedians/etc.and theres a lot of vintage stuff lying around) and came across the linked advertisement. It appears to be a draft or something for this: i.pinimg.com/564x/37/5e/ce/375ece38...fbe6c2.jpg

Not sure if this is too new for the users of this forum, but I figured I would give it a shot. 

Does anyone know what this X-Ray/film type thing is called, so I can do a bit more research?

Here's a photo of it (I have it put up on my window at the moment): drive.google.com/file/d/1D3GNNMONqu...I-07j/view