The French scale or French gauge system is commonly used to measure the size of a catheter. It is most often abbreviated as Fr, but can often be seen abbreviated as Fg, Ga, FR or F. It may also be abbreviated as CH or Ch (for Charriere, charriÃ¨re its). inventor round catheter of 1 French has an external diameter of 1â3 mm, and therefore the diameter of a round catheter in millimetres can be determined by dividing the French size by 3: D (mm) = Fr / 3. or. Fr = D (mm) * 3. For example, if the French size is 9, the diameter is 3 mm.
This article is about the stringed musical instrument. For other uses, see Cello (disambiguation). The cello (/ËtÊÉloÊ/ CHEL-oh; plural cellos or celli) or violoncello (/ËvaÉªÉlÉnËtÊÉloÊ/ VY-É-lÉn-CHEL-oh; Italian pronunciation: [vjolonËtÊÉllo]) is a bowed string instrument with four strings tuned in perfect fifths. The strings from low to high are generally tuned to C2, G2, D3 and A3, an octave lower than the viola.
Cello size Â¾ has a body length of 26 in, a width of 15 in and a total length of 42 in. The Â½ has a 23 in body length; the width is 13.5 and the total is 38.5. The cello Â¼ is 20 inches in body length with a width of 11.75 in. The total length is at 33.5 in.The smallest is the 1/8.he cello size Â¼ has a body length of 23, a maximum width of 13.5 and a total length of 38.5 in. The 1/8 cello has a body of 20 in, a width of 11.75 in and the entire length is 33.5 in. The smallest is the 1/10, which has a body length of 17.75 and a maximum width of 75. The total length is 29.5.