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  2. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    Thus, the outer diameter of a catheter in millimeters can be calculated by dividing the French size by 3. [2] For example, a catheter with a French size of 9 would have an outer diameter of approximately 3 mm. While the French scale aligns closely with the metric system, it introduces redundancy and the potential for rounding errors.

  3. Help:Convert units - Wikipedia

    en.wikipedia.org/wiki/Help:Convert_units

    cm: cm: centimetre: centimeter mm: mm: millimetre: ... and has an optional fraction. ... Conversion of the Mach unit of speed depends on the altitude at which the ...

  4. Orders of magnitude (length) - Wikipedia

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

    1.436 Mmdiameter of Iapetus, one of Saturn's major moons; 1.578 Mmdiameter of Titania, the largest of Uranus's moons; 1.960 Mm – estimated longest axis of Haumea; 2.326 Mmdiameter of the dwarf planet Eris, the largest trans-Neptunian object found to date; 2.376 Mmdiameter of Pluto; 2.707 Mmdiameter of Triton, largest ...

  5. Drill bit sizes - Wikipedia

    en.wikipedia.org/wiki/Drill_bit_sizes

    So a 1 / 2 in (12.7 mm) diameter drill will be able to drill a hole 4 + 1 / 2 in (114.3 mm) deep, since it is 9 times the diameter in length. A 1 / 8 in (3.175 mm) diameter drill can drill a hole 1 + 5 / 8 in (41.275 mm) deep, since it is 13 times the diameter in flute length. [3]

  6. Grain size - Wikipedia

    en.wikipedia.org/wiki/Grain_size

    Wentworth grain size chart from United States Geological Survey Open-File Report 2006-1195: Note size typos; 33.1mm is 38.1 & .545mm is .594 Beach cobbles at Nash Point, South Wales. Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks.

  7. 20 mm caliber - Wikipedia

    en.wikipedia.org/wiki/20_mm_caliber

    The usual nomenclature of ammunition indicates the diameter of projectile and the length of the cartridge that holds it; for example, 20×102 mm is a 20 mm projectile in a 102 mm long case. Though this designation is often assumed to be unique, this is not always the case, e.g. there are three different 20×110 mm types which are not compatible.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. List of drill and tap sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

    Example (inch, coarse): For size 7 ⁄ 16 (this is the diameter of the intended screw in fraction form)-14 (this is the number of threads per inch; 14 is considered coarse), 0.437 in × 0.85 = 0.371 in. Therefore, a size 7 ⁄ 16 screw (7 ⁄ 16 ≈ 0.437) with 14 threads per inch (coarse) needs a tap drill with a diameter of about 0.371 inches.