Mr. Graef. Or the floor?
Mr. Jenner. Or the floor.
Mr. Graef. Yes.
Mr. Jenner. And be so heavy as not to be portable or so firmly secured as not to be removable?
Mr. Graef. Yes; that's right.
Mr. Jenner. Would you indicate their size?
Mr. Graef. I would say approximately 8 feet long total length, with 6 or 7 feet of the front of the camera projecting through a wall, which on the outside of that wall have the exposure lights to light whatever you are going to shoot. Then, the back of the camera sticks through the wall in the darkroom and on the back of the camera, of course, you place your light-sensitive film and make your exposure this way.
Mr. Jenner. And do you use light-sensitive film plates?
Mr. Graef. No; ordinary commercial Litho film or Ortho film that are generally available from large companies.
Mr. Jenner. Indicate the size of the frames?