I was gifted a set of darkroom equipment by a kind neighbour. Among the equipment was a rather interesting camera.
Yeah, you bet your life I'll be running a roll of film through it.
Once I've worked out how to use it.
Looking around, I've discovered that these were made in the early 50's and that (as the name suggests) they're used to create 3D images by taking two images that are viewed together.
Wish me luck!