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Ah, thanks. So were these like the switches still commonly found on tablelamps, where you keep turning in the same direction for both on and off?

Pretty much.

Some of them (Where the knob is shaped like a little paddle), you can turn them in either direction since the plastic "key" is molded on the metal shaft of the switch.

I haven't seen these sold in the USA very often. They're common in Latin America, however. [Linked Image]

The more common ones you have to turn in the same direction use a little round plastic knob that is screwed onto the shaft. You turn these clockwise.