CERAMO gauges for effective height are gauges for determining the effective height of aortic valve cusps. In contrast to the gauges with article no. MSS-1V, -2V and -3V, which are intended for the same purpose, these gauges are not variably adjustable and have only one fixed reference value. Appropriate, several of there gauges are required. The gauges are available in heights from 5 to 12 mm in 1mm intervals.