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

VINTAGE Tektronix Type 1A1 Dual-Trace Plug-In Unit

Tektronix Type M plug-in unit Tested Works

Tektronix SC 502 Oscilloscope Plug-In Module SC502 MPN Test Equipment

TEKTRONIX 1A4 4 CHANNEL AMPLIFIER OSCILLOSCOPE 500 SERIES PLUG IN SCOPE Goddard

Tektronix Type 1A2 Plug-in - Dual Trace for Oscilloscope 500 Series

Tektronix 7S11 Sampling Unit with S-4 Sampling Head Tested

Tektronix Type W SAMPLING Unit Oscilloscope