ORGANIZATION@1 In the LOCATION@1 , alcohol content is measured in terms of the percentage of alcohol by volume , -LRB- ABV -RRB- .

LOCATION@1 In the definition of the LOCATION@1 , the proof number is twice the percentage of the alcohol content measured by volume at a temperature of NUMBER@1 ° F -LRB- NUMBER@2 ° C -RRB- .
