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 |
finger (cloth) | 0.0029163 finger (cloth) | 0.0058326 finger (cloth) | 0.0087489 finger (cloth) | 0.0116652 finger (cloth) | 0.0145815 finger (cloth) | 0.0174978 finger (cloth) | 0.0204141 finger (cloth) | 0.0233304 finger (cloth) | 0.0262467 finger (cloth) | 0.0291630 finger (cloth) | 0.0320793 finger (cloth) | 0.0349956 finger (cloth) | 0.0379119 finger (cloth) | 0.0408282 finger (cloth) | 0.0437445 finger (cloth) | 0.0466608 finger (cloth) | 0.0495771 finger (cloth) | 0.0524934 finger (cloth) | 0.0554097 finger (cloth) | 0.0583260 finger (cloth) | 0.0612423 finger (cloth) | 0.0641586 finger (cloth) | 0.0670749 finger (cloth) | 0.0699913 finger (cloth) | 0.0729076 finger (cloth) | 0.0758239 finger (cloth) | 0.0787402 finger (cloth) | 0.0816565 finger (cloth) | 0.0845728 finger (cloth) | 0.0874891 finger (cloth) | 0.0904054 finger (cloth) | 0.0933217 finger (cloth) | 0.0962380 finger (cloth) | 0.0991543 finger (cloth) | 0.1020706 finger (cloth) | 0.1049869 finger (cloth) | 0.1079032 finger (cloth) | 0.1108195 finger (cloth) | 0.1137358 finger (cloth) | 0.1166521 finger (cloth) | 0.1195684 finger (cloth) | 0.1224847 finger (cloth) | 0.1254010 finger (cloth) | 0.1283173 finger (cloth) | 0.1312336 finger (cloth) | 0.1341499 finger (cloth) | 0.1370662 finger (cloth) | 0.1399825 finger (cloth) | 0.1428988 finger (cloth) | 0.1458151 finger (cloth) | 0.1487314 finger (cloth) | 0.1516477 finger (cloth) | 0.1545640 finger (cloth) | 0.1574803 finger (cloth) | 0.1603966 finger (cloth) | 0.1633129 finger (cloth) | 0.1662292 finger (cloth) | 0.1691455 finger (cloth) | 0.1720618 finger (cloth) | 0.1749781 finger (cloth) | 0.1778944 finger (cloth) | 0.1808107 finger (cloth) | 0.1837270 finger (cloth) | 0.1866433 finger (cloth) | 0.1895596 finger (cloth) | 0.1924759 finger (cloth) | 0.1953922 finger (cloth) | 0.1983085 finger (cloth) | 0.2012248 finger (cloth) | 0.2041411 finger (cloth) | 0.2070575 finger (cloth) | 0.2099738 finger (cloth) | 0.2128901 finger (cloth) | 0.2158064 finger (cloth) | 0.2187227 finger (cloth) | 0.2216390 finger (cloth) | 0.2245553 finger (cloth) | 0.2274716 finger (cloth) | 0.2303879 finger (cloth) | 0.2333042 finger (cloth) | 0.2362205 finger (cloth) | 0.2391368 finger (cloth) | 0.2420531 finger (cloth) | 0.2449694 finger (cloth) | 0.2478857 finger (cloth) | 0.2508020 finger (cloth) | 0.2537183 finger (cloth) | 0.2566346 finger (cloth) | 0.2595509 finger (cloth) | 0.2624672 finger (cloth) | 0.2653835 finger (cloth) | 0.2682998 finger (cloth) | 0.2712161 finger (cloth) | 0.2741324 finger (cloth) | 0.2770487 finger (cloth) | 0.2799650 finger (cloth) | 0.2828813 finger (cloth) | 0.2857976 finger (cloth) | 0.2887139 finger (cloth) | 0.2916302 finger (cloth) |
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 | finger (cloth) | french; charriere | finger (cloth) |
---|---|---|---|
1 | = 0.0029163021289006 | 4 | = 0.011665208515602 |
1.5 | = 0.0043744531933508 | 4.5 | = 0.013123359580052 |
2 | = 0.0058326042578011 | 5 | = 0.014581510644503 |
2.5 | = 0.0072907553222514 | 5.5 | = 0.016039661708953 |
3 | = 0.0087489063867017 | 6 | = 0.017497812773403 |
A finger (sometimes fingerbreadth or finger's breadth) is any of several units of measurement that are approximately the width of an adult human finger, including:
The digit, also known as digitus or digitus transversus (Latin), dactyl (Greek) or dactylus, or finger's breadth — 3⁄4 of an inch or 1⁄16 of a foot
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
finger (cloth) | ≡ 4 ⁄12 in | = 0.1143 m | Other (Length) |
finger (cloth) | french; charriere | finger (cloth) | french; charriere |
---|---|---|---|
1 | = 342.9 | 4 | = 1371.6 |
1.5 | = 514.35 | 4.5 | = 1543.05 |
2 | = 685.8 | 5 | = 1714.5 |
2.5 | = 857.25 | 5.5 | = 1885.95 |
3 | = 1028.7 | 6 | = 2057.4 |
french; charriere | finger (cloth) |
---|---|
1 | = 0.0029163 |
342.9 | = 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 …) |