Tektronix DM502A / Opt: 02 Autoranging DMM Plug-In

Tektronix TM500 Series Aux Storage Plug-In

Tektronix PS501-1 DC Power Supply Plug-In (0-20V/0-400mA, 5V/1A)

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

Vintage Tektronix AM-6565/U Amplifier Plug In Module Great Working Condition

Tektronix 7A24 Dual Trace Amplifier Vertical Plug-in - Tested & working