Flir cm174 600a ac dc imaging clamp meter with igm flir flir cm174 p the flir cm174 is an imaging clamp meter with igm and the first clamp meter equipped with a built in thermal imager that can quickly lead you to problems you cannot see with a standard clamp meter p p the infrared guided measurement igm technology visually guides you to the precise location of a potential electrical problem identifying dangerous and unknown problem areas safely you can confirm your findings with ac