i have mr. mosers adjusters on two of my basses. one with included full-circle pickup.
i like them.
i met mr. moser at last musikmesse in frankfurt. he´s a nice guy.
(i met jonas there too, also nice guy
)
EDIT: i added an animated gif of a moseradjuster, hope i works...
EDIT2: it works if you click it.
its a ball-joint, so you can adjust a different height on each bridge-leg
EDIT3:
http://www.moser-klangwerkstatt.com/