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A board foot is a United States and Canadian unit of approximate volume, used for lumber. It is equivalent to 1 inch × 1 foot × 1 foot (144 cu in or 2,360 cm 3). It is also found in the unit of density pounds per board foot. In Australia and New Zealand the terms super foot or superficial foot were formerly used for this unit. The exact ...
The US survey foot is defined so that 1 metre is exactly 39.37 inches, making the international foot of 0.3048 metres exactly two parts per million shorter. This is a difference of just over 3.2 mm, or a little more than one-eighth of an inch per mile.
The former Weights and Measures office in Seven Sisters, London (590 Seven Sisters Road). The imperial system of units, imperial system or imperial units (also known as British Imperial [1] or Exchequer Standards of 1826) is the system of units first defined in the British Weights and Measures Act 1824 and continued to be developed through a series of Weights and Measures Acts and amendments.
Determination of the rod, using the length of the left foot of 16 randomly chosen people coming from church service. Surveyors in the United States continue to use: chain (22 yards, or 20.1168 m) rod (also called pole or perch) (quarter of a chain, 5 1 ⁄ 2 yards, or 5.0292 m)
Zoll – Inch, usually 1 ⁄ 12 foot, but also 1 ⁄ 10. Fuss – Foot, varied between 23.51 cm in Wesel and 40.83 cm in Trier. Rheinfuss – Rhine foot, used in the North, 31.387 cm; Elle – Ell / cubit, distance between elbow and finger tip. In the North, often 2 feet, In Prussia 17 ⁄ 8 feet, in the South variable, often 2 + 1 ⁄ 2 feet.
Under the Harappan linear measures, Indus cities during the Bronze Age used a foot of 13.2 inches (335 mm) and a cubit of 20.8 inches (528 mm). [11] The Egyptian equivalent of the foot—a measure of four palms or 16 digits—was known as the djeser and has been reconstructed as about 30 cm (11.8 in).
The quarter of a yard (9 inches) was known as the "quarter" without further qualification, while the sixteenth of a yard (2.25 inches) was called a nail. [62] The eighth of a yard (4.5 inches) was sometimes called a finger, [63] but was more commonly referred to simply as an eighth of a yard, while the half-yard (18 inches) was called "half a ...
In Quebec, the surveys in French units were converted using the relationship 1 pied (of the French variety, the same word being used for English feet as well) = 12.789 English inches. [9] This makes the Quebec pied very slightly smaller (about 4 parts in one million) than the pied used in France.