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  2. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    30 cm = 3 dm – typical school-use ruler length (= 300 mm) 30.48 cm = 3.048 dm – 1 foot (measure) 60 cm = 6 dm – standard depth (front to back) of a domestic kitchen worktop in Europe (= 600 mm) 90 cm = 9 dm – average length of a rapier, a fencing sword [30] 91.44 cm = 9.144 dm – one yard (measure)

  3. Average human height by country - Wikipedia

    en.wikipedia.org/wiki/Average_human_height_by...

    175.2 cm (5 ft 9 in) 165.3 cm (5 ft 5 in) 1.06: 25–34 — Self-reported: 2003 [124] Marshall Islands: 163.3 cm (5 ft 4 + 1 ⁄ 2 in) 151.6 cm (4 ft 11 + 1 ⁄ 2 in) 1.08: 15–64 (N= m:762 f:1,187) 93.4%: Measured: 2002 [125] Mauritania: 167.9 cm (5 ft 6 in) 160.3 cm (5 ft 3 in) 1.05: 15–64 (N= m:1,141 f:1,362) 93.6%: Measured: 2006 [126 ...

  4. Shaku (unit) - Wikipedia

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

    The shaku had been standardized as 30.3 cm (11.93 in) since 1891. [5] This means that there are about 3.3 shaku (10 ⁄ 33) to one meter. [6] [7]This definition was established by Meiji government law; until then, even though the unit was given the same name, its length varied depending on the era.

  5. Shoe size - Wikipedia

    en.wikipedia.org/wiki/Shoe_size

    The last is typically longer than the foot heel to toe length by 4 ⁄ 3 cm (13.33 mm) to 5 ⁄ 3 cm (16.67 mm), or 2 to 2 + 1 ⁄ 2 Paris points, so to determine the shoe size based on actual foot length one must add 2 Paris points. Because a Paris point is 2 ⁄ 3 of a centimetre, a centimetre is 3 ⁄ 2 Paris points, and the formula is as ...

  6. Foot (unit) - Wikipedia

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

    The toise has 6 pieds (feet) each of 326.6 mm (12.9 in). He was unsuccessful in introducing a standard unit of length throughout his realm: an analysis of the measurements of Charlieu Abbey shows that during the 9th century the Roman foot of 296.1 mm (11.66 in) was used; when it was rebuilt in the 10th century, a foot of about 320 mm (12.6 in ...

  7. Cubit - Wikipedia

    en.wikipedia.org/wiki/Cubit

    These lengths typically ranged from 44.4 to 52.92 cm (1 ft 5 + 1 ⁄ 2 in to 1 ft 8 + 13 ⁄ 16 in), with an ancient Roman cubit being as long as 120 cm (3 ft 11 in). Cubits of various lengths were employed in many parts of the world in antiquity, during the Middle Ages and as recently as early modern times.

  8. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    mm: Named after: The metric prefix mille (Latin for "one thousand") and the metre: Conversions 1 mm in ..... is equal to ... micrometres 1 × 10 3 μm = 1000 μm centimetres 1 × 10 −1 cm = 0.1 cm metres 1 × 10 −3 m = 0.001 m kilometres 1 × 10 −6 km inches 0.039 370 in feet 0.003 2808 ft

  9. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    Subdivisions of an inch are typically written using dyadic fractions with odd number numerators; for example, two and three-eighths of an inch would be written as ⁠2 + 3 / 8 ⁠ ″ and not as 2.375″ nor as ⁠2 + 6 / 16 ⁠ ″. However, for engineering purposes fractions are commonly given to three or four places of decimals and have been ...