Abstract: This invention relates to a liquid pour metering device (21, 51, 81, 101) as well as a system (111) and method of monitoring dispensing of liquid from a liquid container (113). The device (21, 51) comprises a body defining a liquid passageway (7) having an inlet (9) at one end and an outlet (11) at the other end, the liquid passageway having a mechanical portion controller (1) therein comprising a ball bearing (13) moveable along at least portion of the length of the liquid passageway. There is provided a motion sensor (23) to detect when a pour operation has commenced and a ball bearing sensor (25) operable to detect the end of the pour operation. There is further provided a timer (29) and a transmitter (31) for transmitting data relating to the length of time required to perform the pour operation.