Is it possible to take a 'cheap' digital sliding caliper apart and use it as a digital linear sensor w a '877 ? How do they work ? I have a 80mm long movement which takes min 0.10 sec which I'd like to measure with 0.3 mm resolution. I know there are expensive versions avail w RS232, I dont think they can handle that fast movement though /PJ -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body