The ACL Staticide 807 Concentric Point Pen Probe is a portable, comfortable and ergonomically designed precision instrument that is used for measuring resistance between two points. The small size makes it perfect measurements in hard to each areas or where 5 lb. weight kit does not fit. Due to the size it allows the user to audit specimens in the field or laboratory without sacrificing accuracy. The ACL Staticide 807 Concentric Point Pen Probe device uses spring loaded electrodes that have conductive rubber boots to ensure superior contact with hard and irregular surfaces. It also features pogo-pin type ATE-quality probes made from a beryllium copper with minimum 60 micro-inch hard gold. This unit uses a thin line BNC coaxial cable with inner source and outer sense connections, reading errors due to electrostatic interference are minimized. The BNC to stereo jack adapter allows connection to all ACL’s resistivity meters including the ACL 800 Megohmmeter. This unit is made in the USA and conforms to ANSI/ESD STM11.13-2006.