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 The french = size 3 times the diameter in. millimeters 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.
The violin has the highest pitch range of all the string instruments. 5 people found this useful.
The violin is the smallest and highest pitched instrument in the string family. The viola is a little larger and deeper in sound. The cello is much larger than the viola and produces a rich, mellow tone. The Double Bass is the largest member of the string family and has a very deep tone. Woodwind Family. Piccolo, Flute, Oboe, English Horn, Clarinet, Bass Clarinet, Bassoon & Contrabassoon . Most of the woodwind instruments were once of made entirely of wood. They are now made with wood, metals and/or plastic. Woodwind instruments make sounds in different ways. The flute and piccolo, make a sound by blowing air across the mouthpiece. The clarinet and saxophone use a single reed (piece of cane or fiberglass), which vibrates, to produce a sound.