Here is a coil winder with an automatic counter this helps keep you mind on keeping you coils neat and tight instead of worrying about someone walking into the room and asking some math question and you loosing count.... how many times has this happened to you
Here is the coil winder made from sheet PVC but you could make it with wood just as easy. I know it is not pretty but you get the idea
The counter I borrowed from my measuring wheel. i will put it back on after I am finished with winding coils