I'm looking to get a new wheel, I've got a Momo Boss - so the world is my oyster, as long its Momo

My current unit is also used to navigate naval seacraft, lorries and MK3's

Its 14.5".
How small is too small though, I like the feel of a smaller steering wheel, and I was thinking 12" (300mm ish) would be ideal, does anyone have any first hand experience/pictures. Important thing is that I can still see the dials!