This is the PI200-3 interface #A-5707-0100. It powers and services the TP200 probe, standard touch trigger probes, and up to two SCR200 stylus changing racks.

The PI200-3 interface is a dual purpose interface designed to process signals from the TP200 strain gauge probe and theTP20/TP2/TP6 touch-trigger probes. Special auto-selecting electronics within the interface allow exchange of these probes without any changes to the interface.