Probably the least interesting piece of equipment he has. Anyways, at his latest video he has pretty pedestrian scope (~$2k) https://www.youtube.com/watch?v=JO_EHceV9sk so any fancy scopes might have been just loaners from $work.
How are these 360 degrees test setups called, that use two current probes to determinate the electric resistance in an object from point to point?
That could have been interesting non-destructive scan with microfractured elements like this drill. They had them at uni. They had a third wire to ground after the test and some strange holding grip to prevent the whole setup from becoming a capacitor. One run took hours and you needed the 3d model of the object and thorough cleaning and sometimes sanding of the surface.
