Sistrum
A sistrum (plural: sistra; from Latin sistrum, from Greek σεῖστρον seistron of the same meaning; literally "that which is being shaken", from σείειν seiein, "to shake") is a musical instrument of the percussion family, a form of rattle, used most notably by the ancient Egyptians. It consists of a handle and a U-shaped metal frame, made of brass or bronze and ranging from 30 to 76 cm (12–30 in) in width.