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  2. Loxanthocereus acanthurus - Wikipedia

    en.wikipedia.org/wiki/Loxanthocereus_acanthurus

    There are 15-18 low, rounded ribs divided by sharp indentations into indistinct protuberances. The 2-5 (rarely up to 6) central spines are yellowish and up to 1.5 centimeters long. They are difficult to distinguish from the 20-40 short, thin, yellowish radial spines. The straight or slightly curved, crooked, scarlet flowers are 4 to 9.5 inches ...

  3. Houston Jail - Wikipedia

    en.wikipedia.org/wiki/Houston_Jail

    The interior is divided into two rooms with an interlocking log wall. A fully raised foundation of fieldstone supports the structure. The cell's interior features continuous boards, turned at right angles to the logs and secured in place with 2.5-inch (6.4 cm) wooden nails to prevent prisoners from sawing their way out.

  4. Orders of magnitude (length) - Wikipedia

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

    The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10 −2 metres (⁠ 1 / 100 ⁠ m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimeters; 1 cm – 0.39 inches; 1 cm – edge of a square of area 1 cm 2

  5. Ribes quercetorum - Wikipedia

    en.wikipedia.org/wiki/Ribes_quercetorum

    It is a spreading shrub producing arching stems up to 1.5 meters (5 feet)long, the nodes along the stems bearing 1 to 3 spines each up to 1.5 centimeters (0.6 inch) long. The lightly hairy, glandular leaves are up to 3 centimeters (1.2 inches) long and are divided into a few lobes which are toothed or lobed at their tips.

  6. f-number - Wikipedia

    en.wikipedia.org/wiki/F-number

    In the following quote, an "apertal ratio" of "1 ⁄ 24" is calculated as the ratio of 6 inches (150 mm) to 1 ⁄ 4 inch (6.4 mm), corresponding to an f /24 f-stop: In every lens there is, corresponding to a given apertal ratio (that is, the ratio of the diameter of the stop to the focal length), a certain distance of a near object from it ...

  7. List of naval guns by caliber - Wikipedia

    en.wikipedia.org/wiki/List_of_naval_guns_by_caliber

    234 mm (9.2 in) BL 9.2 inch gun Mk I - VII United Kingdom: 1880s - 1918 234 mm (9.2 in) BL 9.2 inch Mk VIII 40-caliber United Kingdom: 1890s - 1910s 234 mm (9.2 in) BL 9.2 inch Mk X 46-caliber United Kingdom: 1900s - World War I 234 mm (9.2 in) BL 9.2 inch Mk XI 50-caliber United Kingdom: World War I 240 mm (9.4 in) 240mm/50 Modèle 1902 gun

  8. 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 ...

  9. Shoe size - Wikipedia

    en.wikipedia.org/wiki/Shoe_size

    A child's size zero is equivalent to 4 inches (a hand = 12 barleycorns = 10.16 cm), and the sizes go up to size 13 + 1 ⁄ 2 (measuring 25 + 1 ⁄ 2 barleycorns, or 8 + 1 ⁄ 2 inches (21.59 cm)). Thus, the calculation for a children's shoe size in the UK is: child shoe size (barleycorns) = 3 × last length (in) − 12. equivalent to: