TEKTRONIX model 7B53A Dual Time Base Main Triggering Amplifier Module

Tektronix 7B53A 100 MHz Dual Time Base Module - for 7000 Series Oscilloscopes

TEKTRONIX model 7B53A Dual Time Base Main Triggering Amplifier Module

Tektronix 7A26 Dual Trace Amplifier Vertical Plug-in for 7000-series scop

Tektronix 7B53AN Plug-In Module Dual Time Base for 7000 Series Oscilloscopes

Tektronix 7A26 Dual Trace Amplifier Vertical Plug-in for 7000-series scop

TEKTRONIX model TD-1109/u Dual Time Base Main Triggering Amplifier module

Tektronix 7B53A Dual Time Base Oscilloscope Plug-In Module For Parts (T-100)