Checking out my new Tektronix TU-75B Power Test Set. It is a combination variac / dim bulb current limiter. It may be the only factory made dim bulb tester ever made - the only others I've seen were homemade.
No problem, happy to share a look at the thing! And yeah I hear ya on the price. I was extremely lucky to get the one that went for $356 - and this was the nicest of the 3 that show in recent eBay completed auctions. Even that was a bit higher than I felt the thing was worth, but too cool and useful to pass up.