[BBray_T1296]

Originally Posted by TheKeeg

Yes, it measures distance by the unraveling of a string around a spool. I was going to suggest that you could wrap the string around whatever you are counting the rotations of and use the circumference of the "wheel" to figure out the number of rotations, but it would only work if the rotating object only has to rotate a small number of times like a winch and it cannot rotate very fast. I have never seen this on a robot, but it could work I suppose. Could you reveal what this would be used for?

http://www.andymark.com/product-p/am-2618.htm

I know Team 2468 used the Andymark String Pot last year to measure their shooter height. It was quite ingenious.