Cause this is for a salable product, (a USB interface for the WARP-13. ) Can't really send something like this out with a film canister. All our Tiny Talk data loggers use film canisters and i think they are perfect. I would love to have been at Tiny Talk HQ when the proj coordinator said "this thing must fit in a film canister" Justin -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads