my latest collection item,
fantastic all tube oscilloscope from DDR made in 1963-68, it still works,
impressive build quality and good parts
https://youtu.be/rO1HUXiPVrI
Nice little oscilloscope.
The first one I used at work was similar, but had a much bigger tube, & hence, display size.
Interestingly, the old style timebase designs like that hung in for quite a long time elsewhere than the DDR, selling against such things as the "Telequipment Serviscope" which had a proper trigger circuit.
As soon as I found a Serviscope (with its 5MHz bandwidth) at work, I lost interest in the old AWA & EMI ones we had.
About the coax "banana" plugs, such connectors were also common in the FDR.
The TV test & other equipment we bought from there had both the one shown, & the more sophisticated one which had the shroud extending down to level with the tip of the centre pin.
We called them "Fernseh" plugs, as that was what was slathered across the front panel of the equipment, despite the story spouted by "revisionists" from Bosch that it "just means Television". (But that is another argument).