I have a stereo microscope which I got for a really good price, but came as a 'standalone' unit (with a heavy base with a light in it). I'd like to take the microscope bit and put it on some kind of moveable arm that'll clamp to my desk. It's a standard(?) 14/15mm metal pole that it's on at the moment and will just unscrew and slide off no problem.
My issue/question is what's the magic keyword I'm missing to find a suitable arm to hold it? I can get an LCD monitor arm for about £20 (well, I actually have one spare), but as soon as I look for microscope arms the price jumps to the hundreds of £s, despite them being the same thing just with a little hole on the end instead of a VESA plate.