Tektronix 7904 Oscilloscope
Here are some images of one 7904 mainframe with a 7A24 vertical module and a 7B92A horizontal module. The scope screen shows the pulse from an S52 pulse head; the rise time is about 850ps which translates into a bandwidth of about 412 MHz. Since the 7A24 plug-in is specified at 400 MHz, this is about right.
This is the same pulse from an S52 pulse head but using an S4 sampling head instead of the 7A24 vertical amplifier