• 2 articles = 1 brace or couple
• 12 articles = 1 dozen
• 12 dozen = 1 gross
• 20 articles = 1 score

• Paper Measure
• 24 sheets of paper = 1 quire
• 120 sheets of paper = 5 quires
• 20 quires = 1 ream
• 2 reams = 1 bundle
• 10 reams = 1 bale

• Cloth Measure
• 2 1/4 inches = 1 nail
• 4 nails = 1/4 yard
• 4 quarters = 1 yard

• Money (English)
• 4 farthings = 1 penny (d)
• 6 pennies = sixpence or tanner (6d)
• 12 pennies = 1 shilling or bob (s or 1/-)
• 2 shillings = 1 florin (2/-)
• 2 shillings & sixpence = half-crown (2/6)
• 20 shillings = 1 pound sterling (£)
• 21 shillings = 1 guinea

  The Roman Notation Table

  1 = I      11 = XI     25 = XXV
  2 = II     12 = XII    30 = XXX
  3 = III    13 = XIII   40 = XL
  4 = IV     14 = XIV    50 = L
  5 = V      15 = XV     60 = LX
  6 = VI     16 = XVI    70 = LXX
  7 = VII    17 = XVII   80 = LXXX
  8 = VIII   18 = XVII   90 = XC
  9 = IX     19 = XIX    100 = C
  10 = X     20 = XX     1000 = M
  
  A line placed over a letter 
  increaces the value by 1000.

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