Gottlieb System 1 playboard simulator
This pinball test equipment is unique because it was designed to be plugged into a game to test the boards without removing them from the game. Most test rigs are intended for removing the boards from the game to plug into the stand alone test fixture. This is for Gottlieb System 1 pinball machines from 1977-1980 with popular titles such as Joker Poker, Countdown, Close Encounters of the Third Kind, Sinbad, Genie, and Pinball Pool