Drifting the topic a bit, does anyone know of an IR meter that will measure uW/cm^2? I don't want to build my own and try to calibrate it. It SEEMS there should be something out there. Googling turns up IR thermometers. Not really what I want. Ideas? Thanks! Harold --=20 FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportunities available! --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .