If Im not entirely incorrect, I think Doug stated that glass-mirrors give the best reflections.<br>I have used a mirrored-sighting-compass for shaving and applying cammo-cream (in the army). I havent tried signalling with it, though. I have an idea of having a hole cut in the center of the mirror to be able to use it as a signalling mirror. Not field tested yet!<br><br>Stefan<br><br>