Where I used to work we had a few of those oscilloscopes, picture right side middle. On those trolleys too. I remember that they were Tektronix, I looked them up and I think they were a model 547 (which rings a bell) https://w140.com/tekwiki/wiki/547.
One time as a fairly young child I was sick and for some reason my mother couldn't stay home with me, so I was sent to work with my father at the Labs. Not really knowing how else to entertain a small child in that workplace, I was placed in front of a cart with an oscilloscope and a function generator, which provided hours of entertainment.
-Henry