A measuring device 1 for recording a peak level of a liquid flow comprises an inlet 2 which opens into an inlet chamber 3 for receiving the liquid flow and a recording chamber 4 in open liquid communication with the inlet chamber 3 for allowing the liquid flow to accumulate up to a level therein. The recording chamber 4 is separated from the inlet 2 for direct liquid communication. At least one outflow opening 9 is provided to allow at least partial escape of the liquid flow, and indicator means are provided to leave an indication of a level at least approximately at an indication level. A peak level in a liquid flow can thus be recorded very reliably with the measuring device 1.
