Tektronix Type 53K 54K Fast Rise Calibrated Preamp Plug-In Unit B.129

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

Tektronix Type H WIDE-BAND CALIBRATED PREAMP Plug-in Unit, Untested

Tektronix TU-2 Plug-In Unit Test Load Laboratory Oscilloscope Accessory B.23

Vintage Tektronix Type 53/54D Oscilloscope Preamplifier Plug-in Unit

Tektronix 7704A Oscilliscope Main Frame

Tektronix Type 53B Plug In Unit For Parts Or Repair

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