It looks like you have the probe for the scope, which is a good thing since it's older. You can try measuring the voltage of a battery (like a "AA") with the scope, using the point for pos, and clip for neg (though it doesn't matter, if you reverse it, it will move down). Do this before messing with high voltage. And if you don't know or understand the risks, don't do anything.
With the battery, you'll see the line shift up or down 1.5 V. If you set the divisions for 1V, it will probably be about right.
You can go to the tektronix website and view or download some of their primer's on oscilloscope use. While the scope is different, the principle is the same.
Nice Gift!
JW
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