Telequipment Model 1472 Oscilloscope D66

Description

I don't know much about this item. It was in my late Grandfathers attic.
It looks to be in great condition, but wouldn't know if it works or not.
10 MHz, 2-ch analog storage scope.
Comes with plug. And that handle on top is perfect.
Measures 18" long, 8" wide, 9" high.  (measured with handle on top)
I plugged it in and the screen does light up and it displayed lines.
Other than that, I don't know what else it does.
(
Telequipment was a British division of Tektronix)