anachrocomputer:
Keithley 230: Analog PCB
anachrocomputer:
Keithley 230: IEEE-488 PCB
anachrocomputer:
Keithley 230: Rear of Control and Display PCB
anachrocomputer:
Keithley 230 Programmable Voltage Source
anachrocomputer:
Sockets under Keithley 230
anachrocomputer:
Inside the Keithley 230 voltage source
anachrocomputer:
Keithley 230 Programmable Voltage Source
anachrocomputer:
Bristol Hackspace: Digital Voltmeters
anachrocomputer:
Bristol Hackspace: Voltmeters