Tested Tektronix 7B92A Dual Time Base Oscilloscope Plug-In 7000 Oscilloscope T55

Tektronix 7B53AN Plug-In Module Dual Time Base for 7000 Series Oscilloscopes

Tektronix 7A26 Dual Trace Amplifier Plug In for 7000 Series Oscilloscope

Tektronix Type 53 /54B wide band Preamp Tube Oscilloscope Test Inst. Plug in

Tested Tektronix 7A16 7A16A Single Trace Amplifier Oscilloscope Plug-In #T7

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

Dual Trace Amplifier Plug In B065022

Tektronix 7B53A 100 MHz dual time base plug-in for 7K series oscilloscopes