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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).
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}
medium-bore refers to calibers with a diameter of 0.33 inches (8.4 mm) to 0.39 inches (9.9 mm) large-bore refers to calibers with a diameter of 0.40 inches (10 mm) or larger There is much variance in the use of the term "small-bore", which over the years has changed considerably, with anything under 0.577 inches (14.7 mm) considered "small-bore ...
Smaller units of length Unit Greek name Equal to Modern equivalent Description daktylos δάκτυλος: 19.3 mm (0.76 in) finger kondylos κόνδυλος
By {{Convert}} default, the conversion result will be rounded either to precision comparable to that of the input value (the number of digits after the decimal point—or the negative of the number of non-significant zeroes before the point—is increased by one if the conversion is a multiplication by a number between 0.02 and 0.2, remains the ...
[5] [77] Every square mile of surface soil, to a depth of 6 inches (2.6 km 2 to a depth of 15 cm), contains about 1 gram of radium, which releases radon in small amounts to the atmosphere. [3] It is estimated that 2.4 billion curies (90 EBq) of radon are released from soil annually worldwide. [78] This is equivalent to some 15.3 kilograms (34 lb).
1978 was a common year starting on Sunday of the Gregorian calendar, the 1978th year of the Common Era (CE) and Anno Domini (AD) designations, the 978th year of the 2nd millennium, the 78th year of the 20th century, and the 9th year of the 1970s decade.
Average annual snowfall is 16.8 inches or 0.43 metres, though even in winter the median snow depth is zero and the maximum recorded only 13 inches (0.33 m) on February 11, 1968. The most snowfall in one year was 79.3 inches (2.01 m) from July 1946 to June 1947, including 37.0 inches (0.94 m) in November 1946.