The BOS beer meter will monitor how much beer has gone through your tap in two different sizes, i.e. glasses and pitchers. Easy to use and install, the BOS is a great way to monitor beer sales at the bar. Stops bartenders from giving away beer while at the same time allowing the manager to monitor the exact number of ounces that was poured compared to the number of glasses or pitchers of beer rung up at the register. Comes complete with forms to match what was dispensed with what was sold at the register.