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  2. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    [1] The French scale measures and is proportional to the outer diameter of a catheter, with 1 French (Fr) defined as 1 ⁄ 3 millimeter, making the relationship: 1 mm = 3 Fr. Thus, the outer diameter of a catheter in millimeters can be calculated by dividing the French size by 3. [ 2 ]

  3. Help:Convert units - Wikipedia

    en.wikipedia.org/wiki/Help:Convert_units

    Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T

  4. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    The United States retained the ⁠ 1 / 39.37 ⁠-metre definition for surveying, producing a 2 millionth part difference between standard and US survey inches. [47] This is approximately ⁠ 1 / 8 ⁠ inch per mile; 12.7 kilometres is exactly 500,000 standard inches and exactly 499,999 survey inches.

  5. Orders of magnitude (length) - Wikipedia

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

    To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 101 m (1 cm and 1 dm). 1 cm10 millimeters; 1 cm – 0.39 inches; 1 cm – edge of a square of area 1 cm 2; 1 cm – edge of a cube of volume 1 mL; 1 cm – length of a coffee bean; 1 cm – approximate width of average fingernail

  6. Photo print sizes - Wikipedia

    en.wikipedia.org/wiki/Photo_print_sizes

    The alternative Super series, denoted SnR, nR Plus or nR+, has an aspect ratio of 3∶2 (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the size of 6R. 4D/6D is a newer size for most consumer ...

  7. Centimetre - Wikipedia

    en.wikipedia.org/wiki/Centimetre

    The microwave is in-between 1 meter to 1 millimeter. A centimetre or centimeter (US/Philippine spelling), with SI symbol cm, is a unit of length in the International System of Units (SI) equal to one hundredth of a metre, centi being the SI prefix for a factor of ⁠ 1 / 100 ⁠. [1] Equivalently, there are 100 centimetres in 1 metre.

  8. Drill bit sizes - Wikipedia

    en.wikipedia.org/wiki/Drill_bit_sizes

    For Morse taper-shank drill bits, the standard continues in 1/64 inch increments up to 1¾ inch, then 1/32 inch increments up to 2¼ inch, 1/16 inch increments up to 3 inches, 1/8 inch increments up to 3¼ inches, and a single 1/4 inch increment to 3½ inches. One aspect of this method of sizing is that the size increment between drill bits ...

  9. Cun (unit) - Wikipedia

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

    In the twentieth century in the Republic of China, the lengths were standardized to fit with the metric system, and in current usage in People's Republic of China and Taiwan [citation needed] it measures ⁠3 + 1 / 3 ⁠ cm (~1.312 in). In Japan, the corresponding unit, sun (寸), was standardized at 1000 ⁄ 33 mm (3. 03 cm, ~1.193 in, or ~0. ...