[ex 2 Base]

I modified a desk top calculator as a turns counter. I can't exactly remembered what I did, but i do remember i had open up the calculator and very carefully solder to a clear plastic foil pcb. I use a reed relay and a small magnet mounted in paxillin disc. All fits in my lathe, the reed sit on a mounting below the rotating chuck with the disc attached. i haven't used it for several years I get it out later and report back. Ted