Vaccum cleaner/Hoover (Hitchin, SG4)

Bagless, compact cleaner
Head missing but there's a hose & nozzle.
I used it for cleaning the car.
The plastic on/off knob fell off ages ago. It can still, easily, be turned on/off by pushing the plastic upright that the knob used to connect to. I used a pencil, to do this, which is tied to it with a piece of string. It is perfectly safe; there is no electrical compromise.