I got a bunch of stuff at a bankruptcy sale a few weeks ago. One of the items was a HP audio oscillator with an unknown (to me) type of mains socket. Heres a picture of one of the same type:
I don't recognise this. Can someone tell me what country it was intended for use in and what the likely required supply voltage would be? I'm guessing it's probably 110 or 240 but need to know for sure. Thanks.