TEKTRONIX 5B40 TIME BASE POSITION & LEVEL KNOB

Tektronix 5B40 Time Base Plug in Module

TEKTRONIX 5B40 TIME BASE PLUG-IN MODULE

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

TEKTRONIX 5B40 TIME BASE

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

PARTS! TEKTRONIX model 7B53A Dual Time Base Main Triggering Amplifier Module

Tektronix 7B85 Delaying Time Base 7000 Series Oscilloscope Plug-In Module (nice)