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Refugee · 14th Apr 2021, 4:08 pm

The original sliding shutter sockets could be overridden by sort of walking the plug in.
The plain rotary shutter ones just let you push a 2-pin plug in.
The dimpled shutters soon followed making it much more difficult to get a two pin plug in.

14th Apr 2021, 4:08 pm	#31
Refugee Dekatron Join Date: Apr 2012 Location: Worksop, Nottinghamshire, UK. Posts: 5,553	Re: Plug adaptors of the past The original sliding shutter sockets could be overridden by sort of walking the plug in. The plain rotary shutter ones just let you push a 2-pin plug in. The dimpled shutters soon followed making it much more difficult to get a two pin plug in.