This Beaumont Metrix Spirit Measure 50ml GS has the sleek looks to fit into any bar design. A premium product delivering an exact approved measure of spirit. The Metrix can be operated one handed for speed and hygiene. Whisky, gin, vodka and rum must be dispensed through a government stamped measure.(C.E. mark) The 50ml is the standard double (2x25ml) and saves time pouring 2 measures. Also for port, sherry, vermouth and drinks similar to Baileys the 50ml is the standard single measure.