Object has four miniature coaxial leads attached to the wiring side. Leads are labeled "TRIG", "HOR", "VERT", and "BLNK". All but "TRIG" are terminated by a BNC connector. "TRIG" appears to also have had a BNC connector at one time, however only the center pin remains. An IC socket labeled "J1" is unpopulated.
A post-it note reading "S-100-Based Logic Analyzer connected to Oscilloscope for Test/Diagnose work" was found and determined to be for this object.