I think Nokia or maybe Tandberg made such terminals. Let me test my Google skills.

Hmm. No luck. Found a reference to an Radius Pivot CRT on Wikipedia:

http://en.wikipedia.org/wiki/Page_orientation … of_CRT_monitors

I remember reading a review of the Radius Pivot. I think it is indeed the one you're looking for: http://www.gifford.co.uk/~coredump/pivot.htm and http://img.yezzz.com/zm2993736.jpeg

The Radius Pivot is indeed the monitor, a very interesting device indeed. However, I have seen no indications of switches for horizontal and vertical position and size or degauss, which are crucial for my purposes. It would also be helpful to confirm that it does support VGA 200 and 350 line modes.

It's actually got a mercury switch inside it that senses & switches automagically. It was for the mac & pc - interface cards were made for both I think. I'd imagine the hardware on the card would do the switching/resizing, but I wouldn't hold up much hope for good compatibility with games.

They do a bit of a demo in this programme:

http://www.archive.org/details/displays_2

Good old Computer Chronicles, a great show! Pretty cool how it the Pviot is able to automatically, without any input from the user, to adjust the screen mode. Unfortunately it came out too early for MAME, but it should be an excellent MAME monitor.