| ell | 1 ell | 2 ell | 3 ell | 4 ell | 5 ell | 6 ell | 7 ell | 8 ell | 9 ell | 10 ell | 11 ell | 12 ell | 13 ell | 14 ell | 15 ell | 16 ell | 17 ell | 18 ell | 19 ell | 20 ell | 21 ell | 22 ell | 23 ell | 24 ell | 25 ell | 26 ell | 27 ell | 28 ell | 29 ell | 30 ell | 31 ell | 32 ell | 33 ell | 34 ell | 35 ell | 36 ell | 37 ell | 38 ell | 39 ell | 40 ell | 41 ell | 42 ell | 43 ell | 44 ell | 45 ell | 46 ell | 47 ell | 48 ell | 49 ell | 50 ell | 51 ell | 52 ell | 53 ell | 54 ell | 55 ell | 56 ell | 57 ell | 58 ell | 59 ell | 60 ell | 61 ell | 62 ell | 63 ell | 64 ell | 65 ell | 66 ell | 67 ell | 68 ell | 69 ell | 70 ell | 71 ell | 72 ell | 73 ell | 74 ell | 75 ell | 76 ell | 77 ell | 78 ell | 79 ell | 80 ell | 81 ell | 82 ell | 83 ell | 84 ell | 85 ell | 86 ell | 87 ell | 88 ell | 89 ell | 90 ell | 91 ell | 92 ell | 93 ell | 94 ell | 95 ell | 96 ell | 97 ell | 98 ell | 99 ell | 100 ell |
| french; charriere | 3 429 F | 6 858 F | 10 287 F | 13 716 F | 17 145 F | 20 574 F | 24 003 F | 27 432 F | 30 861 F | 34 290 F | 37 719 F | 41 148 F | 44 577 F | 48 006 F | 51 435 F | 54 864 F | 58 293 F | 61 722 F | 65 151 F | 68 580 F | 72 009 F | 75 438 F | 78 867 F | 82 296 F | 85 725 F | 89 154 F | 92 583 F | 96 012 F | 99 441 F | 102 870 F | 106 299 F | 109 728 F | 113 157 F | 116 586 F | 120 015 F | 123 444 F | 126 873 F | 130 302 F | 133 731 F | 137 160 F | 140 589 F | 144 018 F | 147 447 F | 150 876 F | 154 305 F | 157 734 F | 161 163 F | 164 592 F | 168 021 F | 171 450 F | 174 879 F | 178 308 F | 181 737 F | 185 166 F | 188 595 F | 192 024 F | 195 453 F | 198 882 F | 202 311 F | 205 740 F | 209 169 F | 212 598 F | 216 027 F | 219 456 F | 222 885 F | 226 314 F | 229 743 F | 233 172 F | 236 601 F | 240 030 F | 243 459 F | 246 888 F | 250 317 F | 253 746 F | 257 175 F | 260 604 F | 264 033 F | 267 462 F | 270 891 F | 274 320 F | 277 749 F | 281 178 F | 284 607 F | 288 036 F | 291 465 F | 294 894 F | 298 323 F | 301 752 F | 305 181 F | 308 610 F | 312 039 F | 315 468 F | 318 897 F | 322 326 F | 325 755 F | 329 184 F | 332 613 F | 336 042 F | 339 471 F | 342 900 F |
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 |
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 |
| ell | french; charriere |
|---|---|
| 1 | = 3 429 |
| 0.0002916 | = 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 …) |