Now-a-days , it is not unusual for a home inspector to arrive with an array of gadgets that will “see” through walls to provide clues to what’s going on inside them, that will measure the thickness of steel without poking through it, and that will analyze electrical circuits without dismantling the circuit-breaker box. One effective high-tech device used by home inspectors is the infrared camera. With a good one, a trained technician can get an idea of what is going on behind the walls, ceilings and floors. The camera allows an inspector to determine if there is adequate insulation and provides clues about hidden structural, electrical and moisture problems.