Video surveillance domes might do what you need. I've had good luck at "All-Phase Video Security" http://www.allphasevideo.com/ Cheers, Bob > I'd like to top off my bot woth a clear plastic hemisphere, about 24" in diameter. Any clues as to where I might find a source or plactic mfg. that makes there? -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu