Tektronix 013-013 Time Base Plug-in Extension Green | UNTESTED

Tektronix 013-0013-00 - Time Base Plug In Extension - Untested

Tektronix Type 3B1 Plug In, Time Base, untested

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

Tektronix 7B71 Delaying Time Base Plug In

Tektronix Type CA Dual Trace Calibrated Preamp Plug-In Unit

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

Hickok Model 1822 (Tektronix) Unit Dual-Trace WIDE BAND CALIBRATED PREAMP SEE!