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  2. Orders of magnitude (length) - Wikipedia

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

    1.75 m – (5 feet 8 inches) – height of average U.S. male human as of 2002 (source: U.S. CDC as per female above) 2.4 m – wingspan of a mute swan; 2.5 m – height of a sunflower; 2.7 m – length of a leatherback sea turtle, the largest living turtle; 2.72 m – (8 feet 11 inches) – tallest-known human (Robert Wadlow) [31]

  3. Caliber - Wikipedia

    en.wikipedia.org/wiki/Caliber

    While modern firearms are generally referred to by the name of the cartridge the gun is chambered for, they are still categorized together based on bore diameter. [citation needed] For example, a firearm might be described as a "30 caliber rifle", which could accommodate any of a wide range of cartridges using a roughly 0.30 inches (7.6 mm) projectile; or as a "22 rimfire", referring to any ...

  4. 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 3.07 mm. While the French scale aligns closely with the metric system, it introduces redundancy and the potential for rounding errors.

  5. Milliradian - Wikipedia

    en.wikipedia.org/wiki/Milliradian

    If using the metric unit meters for distance and the imperial unit inches for target size, one has to multiply by a factor of 25.4, since one inch is defined as 25.4 millimeters. distance in meters = target in inches angle in mrad × 25.4 {\displaystyle {\text{distance in meters}}={\frac {\text{target in inches}}{\text{angle in mrad}}}\times 25.4}

  6. Rolling straight-edge - Wikipedia

    en.wikipedia.org/wiki/Rolling_straight-edge

    It was a development of an earlier technique of measuring road depressions manually with a ruler under a 10 feet (3.0 m) straight-edge. [ 4 ] [ 6 ] This method had later been developed by the British Department of Transport with the use of graduated wedges which were pushed under the ruler to measure the height, but remained a slow and ...

  7. Talk:Dots per inch - Wikipedia

    en.wikipedia.org/wiki/Talk:Dots_per_inch

    For example, a bitmap image may measure 1000×1000 pixels, a resolution of one megapixel. If it is labeled as 250 DPI, that is an instruction to the printer to print it at a size of 4×4 inches. Changing the DPI to 100 in an image editing program would tell the printer print it at a size of 10×10 inches.

  8. Cephalopod size - Wikipedia

    en.wikipedia.org/wiki/Cephalopod_size

    Scientists measuring the mantle width of a large female giant squid of c. 2 m (6.6 ft) ML. Mantle length (ML) is the standard size measure for coleoid cephalopods (shell diameter being more common for nautiluses) and is almost universally reported in the scientific literature.

  9. Patagonotothen ramsayi - Wikipedia

    en.wikipedia.org/wiki/Patagonotothen_ramsayi

    Patagonotothen ramsayi, the longtail southern cod, rock cod, marujo (in spanish) or Notothenia, is a benthopelagic species of marine ray-finned fish of the family Nototheniidae, the notothens or the cod icefishes, native to the Patagonian Shelf in the southwest Atlantic, [3] where it is the most abundant notothen species found, dominating among medium-sized demersal fishes in the area, [4] and ...