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 |
ell | 0.0002916 ell | 0.0005833 ell | 0.0008749 ell | 0.0011665 ell | 0.0014582 ell | 0.0017498 ell | 0.0020414 ell | 0.0023330 ell | 0.0026247 ell | 0.0029163 ell | 0.0032079 ell | 0.0034996 ell | 0.0037912 ell | 0.0040828 ell | 0.0043745 ell | 0.0046661 ell | 0.0049577 ell | 0.0052493 ell | 0.0055410 ell | 0.0058326 ell | 0.0061242 ell | 0.0064159 ell | 0.0067075 ell | 0.0069991 ell | 0.0072908 ell | 0.0075824 ell | 0.0078740 ell | 0.0081656 ell | 0.0084573 ell | 0.0087489 ell | 0.0090405 ell | 0.0093322 ell | 0.0096238 ell | 0.0099154 ell | 0.0102071 ell | 0.0104987 ell | 0.0107903 ell | 0.0110819 ell | 0.0113736 ell | 0.0116652 ell | 0.0119568 ell | 0.0122485 ell | 0.0125401 ell | 0.0128317 ell | 0.0131234 ell | 0.0134150 ell | 0.0137066 ell | 0.0139983 ell | 0.0142899 ell | 0.0145815 ell | 0.0148731 ell | 0.0151648 ell | 0.0154564 ell | 0.0157480 ell | 0.0160397 ell | 0.0163313 ell | 0.0166229 ell | 0.0169146 ell | 0.0172062 ell | 0.0174978 ell | 0.0177894 ell | 0.0180811 ell | 0.0183727 ell | 0.0186643 ell | 0.0189560 ell | 0.0192476 ell | 0.0195392 ell | 0.0198309 ell | 0.0201225 ell | 0.0204141 ell | 0.0207057 ell | 0.0209974 ell | 0.0212890 ell | 0.0215806 ell | 0.0218723 ell | 0.0221639 ell | 0.0224555 ell | 0.0227472 ell | 0.0230388 ell | 0.0233304 ell | 0.0236220 ell | 0.0239137 ell | 0.0242053 ell | 0.0244969 ell | 0.0247886 ell | 0.0250802 ell | 0.0253718 ell | 0.0256635 ell | 0.0259551 ell | 0.0262467 ell | 0.0265383 ell | 0.0268300 ell | 0.0271216 ell | 0.0274132 ell | 0.0277049 ell | 0.0279965 ell | 0.0282881 ell | 0.0285798 ell | 0.0288714 ell | 0.0291630 ell |
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 | ell | french; charriere | ell |
---|---|---|---|
1 | = 0.00029163021289006 | 4 | = 0.0011665208515602 |
1.5 | = 0.00043744531933508 | 4.5 | = 0.0013123359580052 |
2 | = 0.00058326042578011 | 5 | = 0.0014581510644503 |
2.5 | = 0.00072907553222514 | 5.5 | = 0.0016039661708953 |
3 | = 0.00087489063867017 | 6 | = 0.0017497812773403 |
An ell (from Proto-Germanic *alinō, cognate with Latin ulna) is a unit of measurement, originally a cubit, i.e., approximating the length of a man's arm from the elbow ("elbow" means the bend or bow of the ell or arm) to the tip of the middle finger, or about 18 inches (457 mm); in later usage, any of several longer units.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ell | ell | ≡ 45 in (In England usually) | = 1.143 m | Other (Length) |
ell | french; charriere | ell | french; charriere |
---|---|---|---|
1 | = 3429 | 4 | = 13716 |
1.5 | = 5143.5 | 4.5 | = 15430.5 |
2 | = 6858 | 5 | = 17145 |
2.5 | = 8572.5 | 5.5 | = 18859.5 |
3 | = 10287 | 6 | = 20574 |
french; charriere | ell |
---|---|
1 | = 0.0002916 |
3 429 | = 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 …) |