... This unit is designed to be used with automotive meter or oscillograph. It can be used in the adjustment and diagnosis ... , just clamp the spark plug wire.Used with automotive meter or oscillographCESpecificationsPower:1.5V(AA) Battery × 6Dimensions(W×L×T):95 ... MarkingCE marking, CE certification, CE approval, European directive and standards NEW EASTERN EA100, Signal Pick Up, used with automotive meter ...