The hundredweight, formerly also known as the centumweight or quintal, British imperial and US customary unit of weight or mass. Its value differs between the US and British imperial systems. The two values are distinguished in American English as the "short" and "long" hundredweight and in British English as the "cental" and the "imperial hundredweight".
The long or imperial hundredweight of 8 stone or is defined in the imperial system.
Under both conventions, there are 20 hundredweight in a ton, producing a "short ton" of 2,000 pounds and a "long ton" of 2,240 pounds.
History
The hundredweight has had many values. In England in around 1300, different "hundreds" were defined. The Weights and Measures Act 1835 formally established the present imperial hundredweight of 112 lb. The United States and Canada came to use the term "hundredweight" to refer toa unit of 100 lb. This measure was specifically banned from British use—upon risk of being sued for fraud—by the Weights and Measures Act 1824 but, in 1879, the measure was legalized under the name "cental" in response to legislative pressure from British merchants importing wheat and tobacco from the United States.
Use
The short hundredweight is commonly used in the US in the sale of livestock and some cereal grains and oilseeds, paper, and concrete additives and on some commodities in futures exchanges. A few decades ago, commodities weighed in terms of long hundredweight included cattle, cattle fodder, fertilizers, coal, some industrial chemicals, other industrial materials, and so on. However, since increasing metrication in most English-speaking countries, it is now less used. Church bell ringers use the unit commonly, although church bell manufacturers are increasingly moving over to the metric system. Older blacksmiths' anvils are often stamped with a three-digit number indicating their total weight in hundredweight, quarter-hundredweight, and pounds. Thus, an anvil stamped "1.1.8" will weigh 148 lb. The Imperial hundredweight is used as a measure of vehicle weight in the Bailiwick of Guernsey, although it was redefined as exactly 50.8 kg in 1991.
