Star Trek TOS Bridge Moiré Sweep Scanner Transparency
You get two Transparencies one printed on 8.5 x 11 clear film the other printed on white film.
The size when you cut it out will be a 8" diameter circle. This is the size of the scanner on the bridge on the TOS. It is put inside a 10" x 10" box with lights and a motor to make the one transparency spin, the other remains stationary. You get two transparencies. You build the rest.
This transparency came from the same source that they used on the show!
Does not come with instructions.
This sells for 24.95 on ebay made by some one else.