In the apothecaries' system, which was widely used in the United States until the middle of the 20th century,[12] the dram is the mass of 1⁄96 pounds apothecaries (lb ap), or 1⁄8 ounces apothecaries (oz ap or ℥)[2]: C-7 (the pound apothecaries and ounce apothecaries are equal to the troy pound (lb t), and troy ounce (oz t), respectively).[2]: C-6–C-7 The dram apothecaries is equal to 3 scruples (s ap or ℈) or 60 grains (gr),[2]: C-7 or exactly 3.8879346 grams.[2]: C-14