The Radio Board.org
Yup, 3, I counted it for a 180 , my bad. But still a bit better than not. And it allows me to use a cheap clock hand for the pointer.
Not quite sadly, the variable capacitor these are generally fitted to have a 180 degree rotation, so its actually only 3:1 in real terms. They can be cascaded though 2 giving a 18:1.... :-)