A screw regulator is a type of eccentric regulator which uses an unusual lop-sided screw to move the regulator as desired to trim the hairspring and speed up or slow down the oscillation of the balance wheel.
A screw regulator is a type of eccentric regulator which uses an unusual lop-sided screw to move the regulator as desired to trim the hairspring and speed up or slow down the oscillation of the balance wheel.