Fill line

A fill line is a marking on drinkware indicating the volume of liquid held by the glass.

[3] Germany has had a number of weights and measures acts specifically addressing volumetric markings on glassware.

Local and state laws have since been superseded by the federal Mess- und Eichgesetz [de] ("Measurement and Calibration Act"), which in turn was updated to implement the EU directive.

[4][5] The Campaign for Real Ale (CAMRA) has described this practice as selling a short measure, and says that it costs drinkers £1m a day in beer they have paid for but not received.

The British Beer and Pub Association has issued guidelines for bar staff to give a 'top up' to any drinker who is unsatisfied with the measure they receive.

A British pint glass with a line indicating a half pint measure
A fill line on a Czech beer glass. The fill line is accompanied by the manufacturer (Sahm), the volume (0.3 litres), a CE marking , year (2014), and a code indicating the supervising body (1383).
A fill line on a German wine glass