Re: Old case with electrical odds and ends.
Yes Grelco certainly did make 2*15A adaptors- they look just like the little 2A one only bigger. I don't think they ever did rubber ones, certainly we just used the big bakelite ones. They were pretty tough unless they landed on concrete!
Interestingly a Google image search for 15A Grelco turns up many pictures, but none of them seem to be actual Grelco manufactured specimens. There is one of the Clang ones called a Grelco, though.
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