Abstract: An apparatus for measuring the coagulation characteristics of test liquids, in particular of blood samples, is provided. The apparatus comprises a plate (2, 20) with a bearing (3, 23) arranged in the plate (2, 20) and having an axis of symmetry which is substantially perpendicular to the plane of the plate. A shaft (1, 24) has a longitudinal axis extending substantially perpendicular to the plane of the plate and is connected with the bearing (3, 23). The first end of the shaft is located on one side of the plate (2, 20) and the second end of the shaft is located on the opposite side of the plate (2, 20). The apparatus further comprises means for sensing the rotational movement of the shaft (1, 24). A stem (29) is provided at the second end of the shaft (1, 24). A cup (40) serves for receiving the liquid. The inner contour of the cup is larger than the outer contour of the stem (29). The cup receives at least part of the stem.