Windsor all wave signal generator.

[Pat Pending]

Thanks for the replies, Jeffrey, Mike, I'm not so old (let's say comfortably graveyard side of fifty) However I grew up in a house with just a fifteen amp socket in the kitchen and a five amp in the "front" room all connected with rubber cables, grandma used to run her new fangled electric flat iron and toaster from the twin light socket in the kitchen! Ah memories!

The plug on the signal generator is the living end of unsafe though, it's a two pin with a screw on top and no cord grip.