Tektronix 7704 A Oscilloscope System Opt 9 W/ 7A19 7A18 7B71 and 7B53A Modules

Tektronix 7B92A Dual Time Base Plug In Module

Tektronix 5S14N Dual Trace Delayed Sweep & 7B53A Dual Time Base Plug-in Modules

Tektronix 5110 Mainframe Oscilloscope Mod 817B w/5A18N Plug-in and 5B10N Plug-in

Tektronix 7B92A 500MHz Dual Time Base Plug-In for 7000 Series Oscilloscopes

Lot of 3 Tektronix 7B53AN Time Base & 7A18N Dual Trace Amp Plug-In Modules

Tektronix Oscilloscope 7B15 Delaying Time Base Plug In Module

TEKTRONIX 7B53A DUAL TIME BASE OSCILLOSCOPE PLUG-IN MODULE