Tektronix Type 3A6 Dual-Trace Amplifier Oscilloscope Plug-In Module B.29

Tektronix Type 82 Dual-Trace Plug-In Oscilloscope Unit – Vintage Electronics

ektronix Type CA Dual Trace Plug-In Oscilloscope Preamp Module Vintage B.35

Tektronix Type 80 Vertical Amplifier Plug-In Unit Vintage Oscilloscope Mod B.62

Tektronix 3A8 Operational Amplifier Plug-In Oscilloscope Module Vintage B.36

ektronix 3A72 Dual Trace Amplifier Oscilloscope Plug-In Module Vintage B.60

Tektronix Type 346 Dual Trace Amplifier Oscilloscope Plug-In Module V.21

Tektronix 3A7 Differential Comparator Oscilloscope Plug-In Module B.189