french; charriere | 1 F | 2 F | 3 F | 4 F | 5 F | 6 F | 7 F | 8 F | 9 F | 10 F | 11 F | 12 F | 13 F | 14 F | 15 F | 16 F | 17 F | 18 F | 19 F | 20 F | 21 F | 22 F | 23 F | 24 F | 25 F | 26 F | 27 F | 28 F | 29 F | 30 F | 31 F | 32 F | 33 F | 34 F | 35 F | 36 F | 37 F | 38 F | 39 F | 40 F | 41 F | 42 F | 43 F | 44 F | 45 F | 46 F | 47 F | 48 F | 49 F | 50 F | 51 F | 52 F | 53 F | 54 F | 55 F | 56 F | 57 F | 58 F | 59 F | 60 F | 61 F | 62 F | 63 F | 64 F | 65 F | 66 F | 67 F | 68 F | 69 F | 70 F | 71 F | 72 F | 73 F | 74 F | 75 F | 76 F | 77 F | 78 F | 79 F | 80 F | 81 F | 82 F | 83 F | 84 F | 85 F | 86 F | 87 F | 88 F | 89 F | 90 F | 91 F | 92 F | 93 F | 94 F | 95 F | 96 F | 97 F | 98 F | 99 F | 100 F |
foot, metric | 0.0010541 mf | 0.0021082 mf | 0.0031623 mf | 0.0042164 mf | 0.0052705 mf | 0.0063246 mf | 0.0073786 mf | 0.0084327 mf | 0.0094868 mf | 0.0105409 mf | 0.0115950 mf | 0.0126491 mf | 0.0137032 mf | 0.0147573 mf | 0.0158114 mf | 0.0168655 mf | 0.0179196 mf | 0.0189737 mf | 0.0200278 mf | 0.0210819 mf | 0.0221359 mf | 0.0231900 mf | 0.0242441 mf | 0.0252982 mf | 0.0263523 mf | 0.0274064 mf | 0.0284605 mf | 0.0295146 mf | 0.0305687 mf | 0.0316228 mf | 0.0326769 mf | 0.0337310 mf | 0.0347851 mf | 0.0358391 mf | 0.0368932 mf | 0.0379473 mf | 0.0390014 mf | 0.0400555 mf | 0.0411096 mf | 0.0421637 mf | 0.0432178 mf | 0.0442719 mf | 0.0453260 mf | 0.0463801 mf | 0.0474342 mf | 0.0484883 mf | 0.0495424 mf | 0.0505964 mf | 0.0516505 mf | 0.0527046 mf | 0.0537587 mf | 0.0548128 mf | 0.0558669 mf | 0.0569210 mf | 0.0579751 mf | 0.0590292 mf | 0.0600833 mf | 0.0611374 mf | 0.0621915 mf | 0.0632456 mf | 0.0642996 mf | 0.0653537 mf | 0.0664078 mf | 0.0674619 mf | 0.0685160 mf | 0.0695701 mf | 0.0706242 mf | 0.0716783 mf | 0.0727324 mf | 0.0737865 mf | 0.0748406 mf | 0.0758947 mf | 0.0769488 mf | 0.0780028 mf | 0.0790569 mf | 0.0801110 mf | 0.0811651 mf | 0.0822192 mf | 0.0832733 mf | 0.0843274 mf | 0.0853815 mf | 0.0864356 mf | 0.0874897 mf | 0.0885438 mf | 0.0895979 mf | 0.0906520 mf | 0.0917061 mf | 0.0927601 mf | 0.0938142 mf | 0.0948683 mf | 0.0959224 mf | 0.0969765 mf | 0.0980306 mf | 0.0990847 mf | 0.1001388 mf | 0.1011929 mf | 0.1022470 mf | 0.1033011 mf | 0.1043552 mf | 0.1054093 mf |
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 Charrière, its inventor).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
french; charriere | F | ≡ 1⁄3 mm | = 0.3×10−3 m | Other (Length) |
french; charriere | feet, metric | french; charriere | feet, metric |
---|---|---|---|
1 | ≈ 0.0010540925533789 | 4 | ≈ 0.0042163702135157 |
1.5 | ≈ 0.0015811388300684 | 4.5 | ≈ 0.0047434164902051 |
2 | ≈ 0.0021081851067578 | 5 | ≈ 0.0052704627668946 |
2.5 | ≈ 0.0026352313834473 | 5.5 | ≈ 0.0057975090435841 |
3 | ≈ 0.0031622776601368 | 6 | ≈ 0.0063245553202735 |
A metric foot is a nickname for a preferred number length of 3 basic modules (3 M), or 30 centimetres (11.811 in). The 30 cm metric ruler was a similar length to the traditional imperial one-foot ruler. A metric foot is 4.8 millimetres (0.189 in) shorter than an imperial foot.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric | mf | ≡ √ 1⁄10 m | ≈ 0.31622776602 m | Metric system Non-SI |
feet, metric | french; charriere | feet, metric | french; charriere |
---|---|---|---|
1 | ≈ 948.68329806 | 4 | ≈ 3794.73319224 |
1.5 | ≈ 1423.02494709 | 4.5 | ≈ 4269.07484127 |
2 | ≈ 1897.36659612 | 5 | ≈ 4743.4164903 |
2.5 | ≈ 2371.70824515 | 5.5 | ≈ 5217.75813933 |
3 | ≈ 2846.04989418 | 6 | ≈ 5692.09978836 |
french; charriere | feet, metric |
---|---|
1 | ≈ 0.0010541 |
948.6832981 | ≈ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |