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2. 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.

3. Measuring rod - Wikipedia

   en.wikipedia.org/wiki/Measuring_rod

   A rod is the same length as a perch or a pole. [24] In Old English, the term lug is also used. The length is equal to the standardized length of the ox goad used for teams of eight oxen by medieval English ploughmen. [25] The lengths of the perch (one rod unit) and chain (four rods) were standardized in 1607 by Edmund Gunter.

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. Furlong - Wikipedia

   en.wikipedia.org/wiki/Furlong

   The rod is a historical unit of length equal to 5 + 1 ⁄ 2 yards. It may have originated from the typical length of a mediaeval ox-goad. There are 4 rods in one chain. The furlong (meaning furrow length) was the distance a team of oxen could plough without resting. This was standardised to be exactly 40 rods or 10 chains.

6. English units - Wikipedia

   en.wikipedia.org/wiki/English_units

   One quarter of an acre; one 'furlong' in length by one 'rod' in width; 40 square 'rods'. The rood was sometimes called an acre itself in many ancient contexts. [citation needed] Acre: 4,047 m 2: An area of land one chain (four rods) wide by one furlong in length. As the traditional furlong could vary in length from country to country, so did ...

7. Link (unit) - Wikipedia

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

   rod: ≡ 0.66: foot: ≡ 0.22: ... was by necessity governed by the length of a physical artifact. The one in American possession was slightly different in actual ...

8. Cubit - Wikipedia

   en.wikipedia.org/wiki/Cubit

   Cubit rods were used for the measurement of length. A number of these rods have survived: two are known from the tomb of Maya, the treasurer of the 18th dynasty pharaoh Tutankhamun, in Saqqara; another was found in the tomb of Kha in Thebes. Fourteen such rods, including one double cubit rod, were described and compared by Lepsius in 1865. [7]

9. Unit of length - Wikipedia

   en.wikipedia.org/wiki/Unit_of_length

   The Nippur cubit was one of the oldest known units of length. ... The base unit is Gunter's chain of 66 feet (20 m) which is subdivided into 4 rods, each of 16.5 ft ...