Up for sale here is this NOS vintage CTS power snap switch, probably from the 1960s or 1970s and Made in USA. This is made to attach to the back of a potentiometer, and the power switch turns on when you initially turn the shaft.  This is the standard diameter (a little less than an inch) and will fit the normal-sized pots from that era.  It is rated for 6A 125V so it should be good for almost anything.  Please see my pictures for details and measurements.

US shipping and handling is $6, and international is $20, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.

I have more pots and other vintage electronics listed--feel free to take a look!