Designed to test point-to-point (RTT) and point-to-ground resistance (RTG) in accordance with ESD Association Standards. The probe can be used to make measurements on floors, mats, workbenches, garments, seating or any other flat surface where the resistance between two points is required. Compatible with most resistance meters. Best used with the following Transforming Technologies ESD Resistance Meters: Metriso3000 High Resistance Meter MetrisoB530 Resistance Meter SRM200 Resistance Meter OHM Metrics SRM500K Resistance Meter SRM110 Resistance Meter SRM310 Resistance Meter