Tektronix Type W SAMPLING Unit For 500 Series Oscilloscope

Tektronix Type CA Dual Trace Calibrated Preamp Plug-In Unit

Tektronix Type W SAMPLING Unit Oscilloscope

Tektronix Type D Plug In Unit High Gain Works

Tektronix Type 60 Tube Amplifier Plug In Unit - Untested

TEKTRONIX 575 / 576 Curvetracer Black Socket Blank - 013-073 New Old Stock

Tektronix 1A5 Differential Amplifier Plugin for 500 Series Oscilloscope AS-IS

Tektronix Type 3B1 Plug In, Time Base, untested