The Snap-on Precision Low Amp Probe, No. EETA308D, takes current readings and performs testing of parasitic loads, injectors, pumps, relays and motors. It is compatible with VERUS, VERDICT, MODIS, Vantage PRO and most standard multimeters, says the company. Hall-effect technology provides for nonintrusive circuit testing to protect vehicle wiring and connectors. The spring clamp operation can test wires up to 1/2" diameter and the scale ranges are 20 amps and 60 amps. The EETA308D is CAT I rated to 150V.