Nice!
I still have a
C1-118A (last pic). All the electronics inside are powered through a mains AC transformer, and
the entire oscilloscope is galvanically isolated from the 220V AC. It was my first scope, so I thought galvanic isolation is the norm with all the oscilloscope.
At my first job, they had a very nice and expensive Tektronix, which had its own small trolley, a big blue pouch on top for probes and cables, analog memory, digital multimeter, frequency counter and all the bells and whistles of a high end and very expensive oscilloscope (most probably it was a Tektronix 466B Analog Storage Oscilloscope, don't recall the exact model number).
But, of course, the Tektronix didn't had galvanic separation from the mains, like my little C1-118A has, and I didn't know about that.
Go figure what happened next.