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  2. Furlong - Wikipedia

    en.wikipedia.org/wiki/Furlong

    The term furlong, or shot, was also used to describe a grouping of adjacent strips within an open field. [3] Among the early Anglo-Saxons, the rod was the fundamental unit of land measurement. A furlong was 40 rods; an acre 4 by 40 rods, or 4 rods by 1 furlong, and thus 160 square rods; there are 10 acres in a square furlong.

  3. Rod (unit) - Wikipedia

    en.wikipedia.org/wiki/Rod_(unit)

    The rod is useful as a unit of length because integer multiples of it can form one acre of square measure (area). The 'perfect acre' [2] is a rectangular area of 43,560 square feet, bounded by sides 660 feet (a furlong) long and 66 feet (a chain) wide (220 yards by 22 yards) or, equivalently, 40 rods by 4 rods. An acre is therefore 160 square ...

  4. Rood (unit) - Wikipedia

    en.wikipedia.org/wiki/Rood_(unit)

    Rood is an English unit of area equal to one quarter of an acre [2] or 10,890 square feet, exactly 1,011.7141056 m 2. A rectangle that is one furlong (i.e., 10 chains , or 40 rods) in length and one rod in width is one rood in area, as is any space comprising 40 perches (a perch being one square rod).

  5. Gunter's chain - Wikipedia

    en.wikipedia.org/wiki/Gunter's_chain

    Each rod (or perch or pole) consists of 100 links, (1.98 inches, 50.292 mm each), which are called seconds (″), ten of which make a prime (′, 19.8 inches, 0.503 m). [12] Vincent Wing made chains with 9.90-inch links, most commonly as 33-foot half-chains of 40 links. These chains were sometimes used in the American colonies, particularly ...

  6. Chain (unit) - Wikipedia

    en.wikipedia.org/wiki/Chain_(unit)

    Respectively, these square divisions of land are approximately 80 chains (one mile or 1.6 km), 40 chains (half a mile or 800 m), and 20 chains (a quarter mile or 400 m) on a side. The chain is still used in agriculture: measuring wheels with a circumference of 0.1 chain (diameter ≈ 2.1 ft or 64 cm) are still readily available in Canada and ...

  7. List of humorous units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_humorous_units_of...

    One barn is equal to 1.0 × 10 −28 m 2. The name derives from the folk expressions "As big as a barn," and "Couldn't hit the broad side of a barn", used by particle accelerator physicists to refer to the probability of achieving a collision between particles. For nuclear purposes, 1.0 × 10 −28 m 2 is actually rather large. [25]

  8. FFF system - Wikipedia

    en.wikipedia.org/wiki/FFF_system

    The furlong–firkin–fortnight (FFF) system is a humorous system of units based on unusual or impractical measurements. The length unit of the system is the furlong , the mass unit is the mass of a firkin of water, and the time unit is the fortnight .

  9. Queen Elizabeth II Jubilee Stakes - Wikipedia

    en.wikipedia.org/wiki/Queen_Elizabeth_II_Jubilee...

    The race is now contested on the final day of the five-day Royal Ascot meeting. Prior to 2015 the race was also open to three-year-olds. It was restricted to four-year-olds and up when a new six furlong Group One race, the Commonwealth Cup, was created at the meeting for three-year-olds only in 2015. [2]