長さ、液量、重量（１８世紀）

• 長さ
  • 1 mile = 1,760 yard (1.609 km)
  • 1 yard = 3 feet (0.9144 m)
  • 1 foot = 12 inches (0.3048 m)
  • 1 inch = 2.54 cm

• 液量
  • 1 gallon = 4 quarts (4.5459 l)
  • 1 quart = 2 pints (1.136 l)
  • 1 pint = 20 floz (568 cc)

• 重量
  • 1 (long) ton = 20 cwt = 2,240 lb (1016.05 kg)
  • 1 cwt = 8 stone = 112 lb
  • 1 stone = 14 lb
  • 1 lb = 453.59 g

• • avoirdupois pound（常用ポンド）
    • 1 lb avoirdupois = 16 oz (453.59 g)
    • 1 oz = 16 drams (28.35 g)
  • apothecaries' weight（薬(剤)用量衡法）
    • 1 lb apothecaries' measure = 12 oz (373.2418 g)
    • 1 oz = 8 drams (31.1035 g)
    • 1 drams = 60 grains (3.8879 g)
       

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