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Miners also use it as a unit of area equal to 6 feet square (3.34 m 2) in the plane of a vein. [2] In Britain, it can mean the quantity of wood in a pile of any length measuring 6 feet (1.8 m) square in cross section. [2] In Central Europe, the klafter was the corresponding unit of comparable length, as was the toise in France.
0.3048 m. 30.48 cm. 304.8 mm. The foot (standard symbol: ft) [1][2] is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, ′, is commonly used to represent the foot. [3] In both customary and imperial units, one foot comprises 12 inches, and one yard comprises three feet.
Human height. Human height or stature is the distance from the bottom of the feet to the top of the head in a human body, standing erect. It is measured using a stadiometer, [1] in centimetres when using the metric system or SI system, [2][3] or feet and inches when using United States customary units or the imperial system. [4][5] In the early ...
Some observers have noted that the taller of the two major-party candidates tends to prevail, and argue this is due to the public's preference for taller candidates. [1] The tallest U.S. president was Abraham Lincoln at 6 feet 4 inches (193 centimeters), while the shortest was James Madison at 5 feet 4 inches (163 centimeters).
The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [5] Common imperial units and U.S. customary units of length include: [6] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)
In the most familiar acuity test, a Snellen chart is placed at a standard distance: 6 metres. At this distance, the symbols on the line representing "normal" acuity subtend an angle of five minutes of arc, and the thickness of the lines and of the spaces between the lines subtends one minute of arc. This line, designated 6/6 (or 20/20), is the ...
6 podes 1.85 m (6.1 ft) fathom: kalamos, akaina or dekapous κάλαμος, ἄκαινα, δεκάπους: 10 podes 3.08 m (10.1 ft) 10 feet hamma ἅμμα: 60 podes 18.5 m (20.2 yd) knot, link of a chain plethron: πλέθρον: 100 podes 30.8 m (33.7 yd) 100 feet stadion: στάδιον: 600 podes 184.9 m (202.2 yd) an eighth of a Roman mile
Metric equivalents are approximate, converted at 1 pes = 296 mm. Other units of area described by Columella in his De Re Rustica include the porca of 180 × 30 Roman feet (about 473 m 2 or 5,090 sq ft) used in Hispania Baetica and the Gallic candetum or cadetum of 100 feet [ clarification needed ] in the city or 150 in the country.