Partake in the British naval tradition of enjoying a 1/2 gill of rum with this vintage-style solid copper cup. Made from copper with an inner silver lining and a wishbone handle, this shot glass is the perfect antique decor and is sure to start conversations in your home, bar, or pub. The gill was an old unit of liquid measurement and in the United States, a gill was equal to one-half cup or four fluid ounces, while in England a gill was equivalent to five ounces. Accurately mix cocktails and pour yourself a drink when you use this rum cup to measure your liquor.