Can't think of the name for click thing with slide images?

Question:

Can't think of the name for click thing with slide images?

Had a red one as a kid. You stuck this round disk with pictures of projected images of disney/cartoons, in the projector looked through the lens and clicked through the pictures. It was a mannual like projector that kids would use.

Best Answer - Chosen by Asker:

View-masters! They are a variation of the stereoscope, made by Fisher Price.