Eric,
I came across a box at work a couple of weeks ago stuffed in the maintenence room by itself. It has a big knob on it and it says variable speed something or other. On the knob I think it said Ohmite or something. It had what looked like a standard 3 prong drounded AC outlet on it.
After reading your post, Im wondering about this box. It had no other markings on it.
Ever hear of anything like that ?
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edit: I did some searching and Im thinking it is a Variable AC transformer. I will chack it out tomorrow. Is this what you are describing for speed control for your router.
Wee aim to please ... You aim to ... PLEASE.