of the Day
Clue of the Month
allowance to purchasers, for waste or refuse matter
allowance; Trucker's allowance; Weigh station factor; Tare's
Once a year
(or tret) was an allowance made up until the early 19th century,
for waste, dust, and other impurity in items in commerce,
generally amounting to 4 pounds (1.8 kg) in each 104 pounds (47
kg). It fell into disuse because merchants preferred to simply
adjust the price, rather than make a calculation for trett.
was most commonly used in calculating the true weight for
imported commodities to Great Britain which would be sold by the
pound avoirdupois. From the gross weight, tare weight would be
deducted, to account for the weight of any container that the
commodity was enclosed in. The remainder was known as the suttle.
Trett was deducted from the suttle at the rate of four pounds for
every 104 pounds of commodity, to take account of any dust, sand,
and other impurity included in the suttle. The remainder, after
trett was deducted, became known as the "neat weight"
or "nett weight", a term used in common for commodities
in which no trett was to be deducted, but from which tare had
the early 19th century, trett had fallen into disuse, with
merchants preferring to make allowances in the price for any
impurity, as such allowance was far easier than the arithmetic
calculation for trett. It was not used at custom houses, nor was
it available at the British East India Company's warehouses.
varied considerably from the British usage, for goods in Ireland.
For most goods there, trett was deducted at the rate of one pound
per 112. However, in Cork, trett was deducted after tare for wool
at the rate of 8 pounds per 20 stone (280 pounds), and in Dublin
8 pounds per 21 stone (294 pounds). Additionally in Dublin, trett
was deducted at the rate of 2 pounds per large cask of butter, 4
pounds per raw hide, and 8 pounds per beef carcasse.
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Wikipedia article "Trett".