BTW sim to answer your question on the other thread. My flir camera gives me a crosshair in the center of the screen that gives me spot temps. And yes it is an expensive way to monitor temps lol. I'm lucky though as I'm a home inspector and got this through my job. The one I have is actually an iphone addon that costs about $250. There is also one for android from another company that is like $200 (not sure if it does spot temps). The iphone one also has a regular camera that it blends with the thermal image so you can get definition of what you are looking at instead of colored blobs : P