Vintage Tektronix AM-6565/U Amplifier Plug In Module Great Working Condition

Dual Trace Amplifier Plug In B065022

Tektronix programmable triple power supply plug-in PS5010

Tektronix Type 3A3 Plug In, differential dual trace plug-in, untested

Tektronix TM506 Rackmount 6-Slot Modular Test and Measurement Mainframe

Tektronix Type 3B1 Plug In, Time Base, untested

Tektronix 7B87 Time Base Plug-In Unit - Works

Lot of 3 Tektronix 7A18 7M13 7B53A Oscilloscope Plug-In Modules Untested -