扳指

扳指	bān zhǐ	ornamental thumb ring (originally a ring, often made from jade, worn by archers in ancient times to protect the right thumb when drawing a bowstring)
扳	bān	to pull / to turn (sth) around / to turn around (a situation) / to recoup
扳	pān	variant of 攀
指	zhǐ	finger / to point at or to / to indicate or refer to / to depend on / to count on / (of hair) to stand on end