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However, the term gauge, abbreviated G or ga, typically refers to the Birmingham gauge for hypodermic needles. [ 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.
The six most common shotgun gauges, in descending order of size, are the 10 gauge, 12 gauge, 16 gauge, 20 gauge, 28 gauge, and .410 bore. [7] By far the most popular is the 12 gauge, [7] particularly in the United States. [8] The 20-gauge shotgun is the next most popular size [citation needed], and is popular for upland game hunting. The next ...
The Birmingham gauge ranges from 5/0 or 00000, the lowest gauge number corresponding to the largest size of 0.500 inches (12.7 mm), to 36, the highest gauge number corresponding to the smallest size of 0.004 inches (0.10 mm). The increments between gauge sizes are not linear and vary. [2]
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9mm Japanese revolver: 6 Japan: 1893-1935 Landstad revolver: Halvard Landstad 7.5mm 1882 Ordnance: 2 (+ 6 extra rounds) Norway: 1900 (never entered production) Lefaucheux M1858: Casimir Lefaucheux: 12mm pinfire: 6 Second French Empire: 1858-1865 LeMat Revolver: Jean Alexandre LeMat.42 ball.36 ball 20 gauge: 10 (9 rifled + 1 smoothbore ...
Butterflies are commonly available in 18-27 gauge bore, [1] 21G and 23G being most popular. In phlebotomy , there is widespread avoidance of 25G and 27G butterflies based on belief that such small-bore needles hemolyze and/or clot blood samples and hence invalidate blood tests . [ 2 ]
In pump action firearms, a sliding grip at the fore-end beneath the barrel is manually operated by the user to eject and chamber cartridges. Pump actions are predominantly found in shotguns . Some examples of firearms using the pump-action are the Winchester Model 1912 , Remington 870 , and Mossberg 500 .
Various needle lengths are available for any given gauge. Needles in common medical use range from 7 gauge (the largest) to 34 (the smallest). 21-gauge needles are most commonly used for drawing blood for testing purposes, and 16- or 17-gauge needles are most commonly used for blood donation, as the larger luminal cross-sectional area results ...