The prayer wheel or mani-chuskor. This consists of a metal cylinder - ranging in height from a mere two inches to a colossal eight or nine feet - and containing a long scroll of paper bearing countless repetitions of the mystical, all-powerful Tibetan prayer "Om Mani Padme Hum!" Translated literally, this means "Hail! Jewel in the Lotus" although its actual meaning is obscure. Every time the cylinder is rotated, Tibetans believe, a stream of prayer ascends skywards.