?? A Double Jigger is an hourglass-shaped measuring device used by bartenders to ensure that they pour accurate amounts of alcohol into every drink. Usually made of metal, jiggers contain two different measuring amounts - one on either side of the hourglass.;??Cast in radiant copper with a band that separates its one- and two-ounce sections;??The interior of each side of our professional Japanese-style double jigger is scored with pinpoint mixology measurements (1.5, 0.75 and 0.5 ounces).;?? Polished copper finish - 1 oz (30 ml) & 2 oz (60ml) sides - Inside marked with 1.5, 0.75, & 0.5 oz measurements;?? By Viski