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  2. Orders of magnitude (length) - Wikipedia

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

    22 cm = 2.2 dm – diameter of a typical association football (soccer ball) 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]

  3. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    The French scale measures the outer diameter of the catheter, not the size of the internal drainage channel (inner diameter). For instance, a two-way catheter of 20 Fr and a three-way catheter of 20 Fr have the same outer diameter, but the three-way catheter has an additional channel for irrigation, reducing the size of its drainage channel.

  4. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    2.54 centimeters (1 inch is exactly 2.54 cm) 25.4 millimetres ... Johansson's compromise was to manufacture gauge blocks with a nominal size of 25.4mm, ...

  5. Biblical and Talmudic units of measurement - Wikipedia

    en.wikipedia.org/wiki/Biblical_and_Talmudic...

    The Books of Samuel portray the Temple as having a Phoenician architect, and in Phoenicia it was the Babylonian ell which was used to measure the size of parts of ships. [1] Thus scholars are uncertain whether the standard Biblical ell would have been 49.5 or 52.5 cm (19.49 or 20.67 in), but are fairly certain that it was one of these two ...

  6. Traditional French units of measurement - Wikipedia

    en.wikipedia.org/wiki/Traditional_French_units...

    ~1055 cm 2 ~1.136 sq ft The French square foot: toise carrée: 36 ~3.799 m 2 ~40.889 sq ft, or ~4.543 sq yd The French square fathom Paris: perche d'arpent carrée: 484 ~51.07 m 2 ~61.08 sq yd This was the main square perch in old French surveying. It is a square 22 pieds du roi on each side. vergée: 12 100 ~1277 m 2 ~1527 sq yd

  7. Slide rule - Wikipedia

    en.wikipedia.org/wiki/Slide_rule

    For example, a 10 cm (3.9 in) circular would have a maximum precision approximately equal to a 31.4 cm (12.4 in) ordinary slide rule. Circular slide rules also eliminate "off-scale" calculations, because the scales were designed to "wrap around"; they never have to be reoriented when results are near 1.0—the rule is always on scale.

  8. Foot (unit) - Wikipedia

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

    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 Greek foot ( πούς , pous ) had a length of ⁠ 1 / 600 ⁠ of a stadion , [ 12 ] one stadion being about 181.2 m (594 ft); [ 13 ] therefore a foot was, at the time, about 302 mm (11.9 in).

  9. Joint European standard for size labelling of clothes

    en.wikipedia.org/wiki/Joint_European_standard...

    Bra size 70B is suitable for women with underbust girth 68–72 cm and bust girth from 82–84 cm to 86–88 cm. Example 2 A woman with an underbust girth of 89 cm and a bust girth of 108 cm has cup size 19 cm (= 108 cm – 89 cm) or "D". Her underbust girth rounded to the nearest multiple of 5 cm is 90 cm.