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5.5mm scale narrow gauge model railways were developed by GEM in 1963, using 12 mm (0.472 in) gauge track, which was the smallest commercially available gauge at the time . [1] GEM produced kits for locomotives and rolling stock from the Ffestiniog and Talyllyn railways.
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 ...
The French scale, also known as the French gauge or Charrière system, is a widely used measurement system for the size of catheters.It is commonly abbreviated as Fr but may also be abbreviated as Fg, FR or F, and less frequently as CH or Ch (referencing its inventor, Charrière).
These names were used relative to the others and their exact length would vary over time, from country to country, and from foundry to foundry. For example, "agate" and "ruby" used to be a single size "agate ruby" of about 5 points; [2] metal type known as "agate" later ranged from 5 to 5.8 points.
1.0 mm – 0.03937 inches or 5/127 (exactly) 1.0 mm – side of a square of area 1 mm²; 1.0 mm – diameter of a pinhead; 1.5 mm – average length of a flea [27] 2.54 mm – distance between pins on old dual in-line package (DIP) electronic components; 5 mm – length of an average red ant; 5 mm – diameter of an average grain of rice
This is a list of firearm cartridges which have bullets in the 5.00 to 5.99 mm (0.197 to 0.236 in) caliber range. Length refers to the cartridge case length. OAL refers to the overall length of the cartridge.
The outside micrometer has a unit conversion chart between fractional and decimal inch ... 5.783 ± 0.001 mm, comprising 5.5 mm on main screw lead scale, 0.28 mm on ...
The 6mm Creedmoor is a necked-down version of the 6.5mm Creedmoor using 6 mm (.243 inch) bullets, lighter than 6.5 mm bullets with similarly reduced recoil. [30] John Snow at Outdoor Life built a 6mm Creedmoor rifle in 2009 for a magazine article of the wildcat cartridge that appeared in 2010, but the first documented conception of the 6mm ...