apptech wrote: > 'Theory of mind' people may be interested. > K & E should at least skim. Keuffel and Esser? I still have mine somewhere. It has full trig and log-log scales. Cheers, Bob -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist