| foot, metric (long) | 1 lmf | 2 lmf | 3 lmf | 4 lmf | 5 lmf | 6 lmf | 7 lmf | 8 lmf | 9 lmf | 10 lmf | 11 lmf | 12 lmf | 13 lmf | 14 lmf | 15 lmf | 16 lmf | 17 lmf | 18 lmf | 19 lmf | 20 lmf | 21 lmf | 22 lmf | 23 lmf | 24 lmf | 25 lmf | 26 lmf | 27 lmf | 28 lmf | 29 lmf | 30 lmf | 31 lmf | 32 lmf | 33 lmf | 34 lmf | 35 lmf | 36 lmf | 37 lmf | 38 lmf | 39 lmf | 40 lmf | 41 lmf | 42 lmf | 43 lmf | 44 lmf | 45 lmf | 46 lmf | 47 lmf | 48 lmf | 49 lmf | 50 lmf | 51 lmf | 52 lmf | 53 lmf | 54 lmf | 55 lmf | 56 lmf | 57 lmf | 58 lmf | 59 lmf | 60 lmf | 61 lmf | 62 lmf | 63 lmf | 64 lmf | 65 lmf | 66 lmf | 67 lmf | 68 lmf | 69 lmf | 70 lmf | 71 lmf | 72 lmf | 73 lmf | 74 lmf | 75 lmf | 76 lmf | 77 lmf | 78 lmf | 79 lmf | 80 lmf | 81 lmf | 82 lmf | 83 lmf | 84 lmf | 85 lmf | 86 lmf | 87 lmf | 88 lmf | 89 lmf | 90 lmf | 91 lmf | 92 lmf | 93 lmf | 94 lmf | 95 lmf | 96 lmf | 97 lmf | 98 lmf | 99 lmf | 100 lmf |
| french; charriere | 1 000 F | 2 000 F | 3 000 F | 4 000 F | 5 000 F | 6 000 F | 7 000 F | 8 000 F | 9 000 F | 10 000 F | 11 000 F | 12 000 F | 13 000 F | 14 000 F | 15 000 F | 16 000 F | 17 000 F | 18 000 F | 19 000 F | 20 000 F | 21 000 F | 22 000 F | 23 000 F | 24 000 F | 25 000 F | 26 000 F | 27 000 F | 28 000 F | 29 000 F | 30 000 F | 31 000 F | 32 000 F | 33 000 F | 34 000 F | 35 000 F | 36 000 F | 37 000 F | 38 000 F | 39 000 F | 40 000 F | 41 000 F | 42 000 F | 43 000 F | 44 000 F | 45 000 F | 46 000 F | 47 000 F | 48 000 F | 49 000 F | 50 000 F | 51 000 F | 52 000 F | 53 000 F | 54 000 F | 55 000 F | 56 000 F | 57 000 F | 58 000 F | 59 000 F | 60 000 F | 61 000 F | 62 000 F | 63 000 F | 64 000 F | 65 000 F | 66 000 F | 67 000 F | 68 000 F | 69 000 F | 70 000 F | 71 000 F | 72 000 F | 73 000 F | 74 000 F | 75 000 F | 76 000 F | 77 000 F | 78 000 F | 79 000 F | 80 000 F | 81 000 F | 82 000 F | 83 000 F | 84 000 F | 85 000 F | 86 000 F | 87 000 F | 88 000 F | 89 000 F | 90 000 F | 91 000 F | 92 000 F | 93 000 F | 94 000 F | 95 000 F | 96 000 F | 97 000 F | 98 000 F | 99 000 F | 100 000 F |
A foot, metric (long) is the unit of length.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| foot, metric (long) | lmf | ≡ 1⁄3 m | ≈ 0.3 m | Metric system SI |
| feet, metric (long) | french; charriere | feet, metric (long) | french; charriere |
|---|---|---|---|
| 1 | = 1000 | 4 | = 4000 |
| 1.5 | = 1500 | 4.5 | = 4500 |
| 2 | = 2000 | 5 | = 5000 |
| 2.5 | = 2500 | 5.5 | = 5500 |
| 3 | = 3000 | 6 | = 6000 |
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 (long) | french; charriere | feet, metric (long) |
|---|---|---|---|
| 1 | = 0.001 | 4 | = 0.004 |
| 1.5 | = 0.0015 | 4.5 | = 0.0045 |
| 2 | = 0.002 | 5 | = 0.005 |
| 2.5 | = 0.0025 | 5.5 | = 0.0055 |
| 3 | = 0.003 | 6 | = 0.006 |
| feet, metric (long) | french; charriere |
|---|---|
| 1 | = 1 000 |
| 0.001 | = 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 …) |