Keithley 7001 Switch System Mainframe

Keithley 7013-C Relay Switch Card 20-Channel for 7001/7002 Switching Mainframes

Keithley 7001 Switch System Mainframe With IEEE-488 GPIB interface

KEITHLEY 7001 SWITCH SYSTEM CHASSIS MAINFRAME ~ NO MODULES

Keithley 7002 400-Channel / 10-Slot Switch Mainframe, working, w/damaged case.

^ Keithley 707 Switching Matrix Mainframe

Keithley 7002 Switch System 400-Channel 10-Slot Mainframe Unit A

Keithley 7002 Switch System 400-Channel 10-Slot Mainframe Unit B