Abstract: An instrument for measuring a dilatation of cervix uteri during a first stage of labor, includes two elongated arms pivotally connected with one another in the region of their central portion and having two opposite ends; two loops for passing fingers of a physician and arranged on one end of the arms; a scale arranged on another end of one of the arms and having a plurality of graduation marks which are spaced from one another in a transverse direction. An indicating tip is provided at another end of the other arm and movable relative to the graduation marks when a physician passes his or her fingers through the loops and moves the fingers relative to one another to palpate an edge of an orifice of cervix uteri.

Abstract: An instrument for measuring dilatation of cervix uteri has two elongated arms movable relative to one another in a scissors-like manner and each having a measuring portion and an indicating portion spaced from one another. Two expansible loops are formed at the end of the measuring portions, whereas an indicating tip is provided at the end of one indicating portion and a scale is provided at the end of the other indicating portion. In accordance with the inventive method, fingers of a physician extend through the loops so as to palpate the edge of the orifice of cervix uteri and move the loops apart from one another. At the same time, the indicating tip points to a respective graduation mark of the scale and thereby shows a degree of dilation.