It can be used with any Narda 8700 Series probe. The 8718B is an upgraded version of the original Model 8718. Although there are many enhancements, the 8718B is most easily distinguished from its predecessor by the quick-release style probe connector. The meter enables you to perform both simple measurements and more demanding ones that require averaging and/or data logging. It can be mounted on a tripod and used with an optional fiber optic link for enhanced accuracy in certain applications. Ge