Short Uterine Sound This is a Short Uterine Sound, made of brass by Fannin Dublin (as engraved on the handle). It features a shaft embossed with a scale and a bulbous end. The shaft is curved towards the tip, which aids in navigating the uterine cavity. The embossed scale allows for precise measurement of the depth of the uterus. The handle features a horizontal pattern on the upper side to secure grip. The instrument shows signs of wear and tear, with the brass exhibiting tarnish, a process known as oxidation, which causes the metal to darken or turn black 1925-1975