Seam (unit)

A seam is an obsolete unit of volume or mass in the United Kingdom

The Oxford English Dictionary[1] includes definitions of a seam as:

  • 6–8 imperial pecks (55–73 L) of sand
  • 9 imperial pecks (82 L) of apples
  • 8 imperial bushels (290 L) of grain
  • 120 pounds (54 kg) of glass (or 100 pounds (45 kg) in the 14th century)
  • a cart-load, sometimes of a specified amount such as 2 hundredweight (100 kg) of straw or 3 hundredweight (150 kg) of hay or manure.

Cardarelli asserts that it was equal to 64 imperial gallons (290 L).[2]


  1. "Seam, n.2 (1b and 2)". Oxford English Dictionary. Retrieved 26 February 2015.
  2. Cardarelli, François (2003). Encyclopaedia of Scientific Units, Weights and Measures. London: Springer. p. 34. ISBN 978-1-4471-1122-1.
  • "Seam". A collection of further definitions and quotations

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