FLIR thermal cameras are quite popular. The FLIR ETS320 is a benchtop thermal imaging camera that lets you perform temperature checks on PCB boards and electronics in your lab. It measures temperatures across more than 76,000 points. This 320 x 240 detector is battery powered, so need to deal with any wires. It connects to your PC via USB.
This handy tool is ideal for lab electronics testing. More info is available here.