The duplex test lead measures both current and resistance when taking four-wire resistance measurements, which are more accurate than two-wire resistance measurements and allow low resistance values to be detected. The helical spring-point hand spikes compress and rotate to make contact with a conductor. There is 0.4" (10 mm) between the current and potential probe tips on the duplex hand spikes. For use with Megger DLRO10HD, DLRO10, DLRO10X, and BT51 digital microhmmeters.

The duplex test lead measures both current and resistance when taking four-wire resistance measurements, which are more accurate than two-wire resistance measurements and allow low resistance values to be detected. The helical spring-point hand spikes compress and rotate to make contact with a conductor. There is 0.4" (10 mm) between the current and potential probe tips on the duplex hand spikes. For use with Megger DLRO10HD, DLRO10, DLRO10X, and BT51 digital microhmmeters.