Solinst® Model 122™ Interface Meter

The 5˝8"-dia. probe uses infra-red refraction to measure both sinking and floating liquids and conductivity to distinguish water. Optical and electronic sensors are set precisely at the zero point for a high level of accuracy and repeatability.
Specifications: Designed for rugged field use, Model 122 features automatic circuitry testing, extended battery life of 120 hours of use from two 9V batteries housed in the reel and pressure-proof probe. Each tape uses stranded stainless steel conductors embedded within polyethylene to provide strength and prevent stretch. All markings are permanently heat-embossed. A tape guide/datum protects the tape from sharp edges. Includes a soft carrying case, tape guide/datum and two 9V batteries.