And also, an old (1970s) vacuum with two blade pins at arranged at a 45 degree angle i.e. / / but in the same configuration as above.
That was used by Electrolux.
The two round pin connector with scraping earth contact was common here for flip down side toasters, irons, electric jugs and frypans. However, I've never seen one with a switch before.
The other purpose I've used them for is plugging in the occasional European appliance; the pins are the same spacing but the grip isn't the best.
