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 |
cape foot | 0.0010587 ft (Cape) | 0.0021174 ft (Cape) | 0.0031761 ft (Cape) | 0.0042347 ft (Cape) | 0.0052934 ft (Cape) | 0.0063521 ft (Cape) | 0.0074108 ft (Cape) | 0.0084695 ft (Cape) | 0.0095282 ft (Cape) | 0.0105869 ft (Cape) | 0.0116456 ft (Cape) | 0.0127042 ft (Cape) | 0.0137629 ft (Cape) | 0.0148216 ft (Cape) | 0.0158803 ft (Cape) | 0.0169390 ft (Cape) | 0.0179977 ft (Cape) | 0.0190564 ft (Cape) | 0.0201150 ft (Cape) | 0.0211737 ft (Cape) | 0.0222324 ft (Cape) | 0.0232911 ft (Cape) | 0.0243498 ft (Cape) | 0.0254085 ft (Cape) | 0.0264672 ft (Cape) | 0.0275258 ft (Cape) | 0.0285845 ft (Cape) | 0.0296432 ft (Cape) | 0.0307019 ft (Cape) | 0.0317606 ft (Cape) | 0.0328193 ft (Cape) | 0.0338780 ft (Cape) | 0.0349367 ft (Cape) | 0.0359953 ft (Cape) | 0.0370540 ft (Cape) | 0.0381127 ft (Cape) | 0.0391714 ft (Cape) | 0.0402301 ft (Cape) | 0.0412888 ft (Cape) | 0.0423475 ft (Cape) | 0.0434061 ft (Cape) | 0.0444648 ft (Cape) | 0.0455235 ft (Cape) | 0.0465822 ft (Cape) | 0.0476409 ft (Cape) | 0.0486996 ft (Cape) | 0.0497583 ft (Cape) | 0.0508169 ft (Cape) | 0.0518756 ft (Cape) | 0.0529343 ft (Cape) | 0.0539930 ft (Cape) | 0.0550517 ft (Cape) | 0.0561104 ft (Cape) | 0.0571691 ft (Cape) | 0.0582278 ft (Cape) | 0.0592864 ft (Cape) | 0.0603451 ft (Cape) | 0.0614038 ft (Cape) | 0.0624625 ft (Cape) | 0.0635212 ft (Cape) | 0.0645799 ft (Cape) | 0.0656386 ft (Cape) | 0.0666972 ft (Cape) | 0.0677559 ft (Cape) | 0.0688146 ft (Cape) | 0.0698733 ft (Cape) | 0.0709320 ft (Cape) | 0.0719907 ft (Cape) | 0.0730494 ft (Cape) | 0.0741081 ft (Cape) | 0.0751667 ft (Cape) | 0.0762254 ft (Cape) | 0.0772841 ft (Cape) | 0.0783428 ft (Cape) | 0.0794015 ft (Cape) | 0.0804602 ft (Cape) | 0.0815189 ft (Cape) | 0.0825775 ft (Cape) | 0.0836362 ft (Cape) | 0.0846949 ft (Cape) | 0.0857536 ft (Cape) | 0.0868123 ft (Cape) | 0.0878710 ft (Cape) | 0.0889297 ft (Cape) | 0.0899883 ft (Cape) | 0.0910470 ft (Cape) | 0.0921057 ft (Cape) | 0.0931644 ft (Cape) | 0.0942231 ft (Cape) | 0.0952818 ft (Cape) | 0.0963405 ft (Cape) | 0.0973992 ft (Cape) | 0.0984578 ft (Cape) | 0.0995165 ft (Cape) | 0.1005752 ft (Cape) | 0.1016339 ft (Cape) | 0.1026926 ft (Cape) | 0.1037513 ft (Cape) | 0.1048100 ft (Cape) | 0.1058686 ft (Cape) |
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 | cape feet | french; charriere | cape feet |
---|---|---|---|
1 | ≈ 0.0010586864570016 | 4 | ≈ 0.0042347458280063 |
1.5 | ≈ 0.0015880296855024 | 4.5 | ≈ 0.0047640890565071 |
2 | ≈ 0.0021173729140031 | 5 | ≈ 0.0052934322850079 |
2.5 | ≈ 0.0026467161425039 | 5.5 | ≈ 0.0058227755135087 |
3 | ≈ 0.0031760593710047 | 6 | ≈ 0.0063521187420094 |
A Cape foot is a unit of length defined as 1.0330 English feet (and equal to 12.396 English inches, or 0.31485557516 meters) found in documents of belts and diagrams relating to landed property.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
cape foot | ft (Cape) | Legally defined as 1.033 English feet in 1859 | ≈ 0.314858 m | Other (Length) |
cape feet | french; charriere | cape feet | french; charriere |
---|---|---|---|
1 | ≈ 944.56672548 | 4 | ≈ 3778.26690192 |
1.5 | ≈ 1416.85008822 | 4.5 | ≈ 4250.55026466 |
2 | ≈ 1889.13345096 | 5 | ≈ 4722.8336274 |
2.5 | ≈ 2361.4168137 | 5.5 | ≈ 5195.11699014 |
3 | ≈ 2833.70017644 | 6 | ≈ 5667.40035288 |
french; charriere | cape feet |
---|---|
1 | ≈ 0.0010587 |
944.5667255 | ≈ 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 …) |