I think I’ve seen something a bit like these in tape drives and floppy drives, but then again maybe not. A Rolamite is a metal tape and a set of rollers that have some simply fascinating properties, like almost no friction and a natural tendency to store energy. A fine example of a practical use is this letter scale. I wonder if this might have a use in robotics…
[via Boing Boing]
surely there are more uses for this than scale, i wonder what they might be.