> > Thank Dennis, but the idea I posted is ideal for this application. > > Cheap, repeatable and sensitive. Try it for yourself if you've got > > the balls > > Let ladies decide. I meant.......if one of them's big, plastic and empty and the other's a little metal one....... Good luck finding someone into exotic prosthetics -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist