Do you mean a new GROUNDING ROD has been installed? It does look like a spear (or javalin) in that it is about 2 meters long, is copper and has a point that is driven into the ground.
As for the fuse, are you talking about the fuse in the oscilloscope itself, or a fuse that protects the wiring of your building? I thought that you were talking about a fuse inside the oscilloscope, since it is equipment size (1A). I don't see any way that you could blow the equipment fuse with external devices on the line circuit, unless there are serious problems with the building wiring.