Hello again… here is a Variac for sale…. I know what it is used for, but I have not tested it. If you are interested to purchase, tell me how to do a quick test and let me know what and where to make connections. Looks to be in good condition and will be useful in many applications such as slowly powering up old radios, etc. Asking $50.00 OBO plus shipping; it is rather heavy. thanks for looking…. regards…. Ron VE4SR