Later I would twist and turn the knobs (I had no idea what I was doing) until I would see a dot zip across the screen. I discovered if I put my fingers near the little plugs on the front of the device, the dot would jump and move in strange directions.
Now, 45 years later, I have finally purchased my own scope. It's a far cry from that old behemoth but it's still just as exciting. I've found a nice little spot on my bench (it's a WHOLE lot smaller!) and have begun to work through the setup. Unfortunately, I still don't know what I'm doing, but thanks to YouTube and my my son the engineer, I'm learning!