NonLinearLoad, I do IR work as part of my job. I use a FLIR IR Camera for this work. ($$$$) Without an extra expensive lens I can not get an accurate temp at 30'. You will not get an accurate reading with an IR Thermometer at 30'. That range is out of its designed capabilities. It is a very useful tool for trouble shooting like drillman & nesparky have posted. Also what liability issues are you concerned about from using this piece of test equipment?
Al
