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 |
x unit | 3,326,348,002.528 xu | 6,652,696,005.056 xu | 9,979,044,007.5841 xu | 13,305,392,010.112 xu | 16,631,740,012.64 xu | 19,958,088,015.168 xu | 23,284,436,017.696 xu | 26,610,784,020.224 xu | 29,937,132,022.752 xu | 33,263,480,025.28 xu | 36,589,828,027.808 xu | 39,916,176,030.336 xu | 43,242,524,032.864 xu | 46,568,872,035.392 xu | 49,895,220,037.92 xu | 53,221,568,040.448 xu | 56,547,916,042.976 xu | 59,874,264,045.504 xu | 63,200,612,048.032 xu | 66,526,960,050.56 xu | 69,853,308,053.089 xu | 73,179,656,055.617 xu | 76,506,004,058.145 xu | 79,832,352,060.673 xu | 83,158,700,063.201 xu | 86,485,048,065.729 xu | 89,811,396,068.257 xu | 93,137,744,070.785 xu | 96,464,092,073.313 xu | 99,790,440,075.841 xu | 103,116,788,078.37 xu | 106,443,136,080.9 xu | 109,769,484,083.42 xu | 113,095,832,085.95 xu | 116,422,180,088.48 xu | 119,748,528,091.01 xu | 123,074,876,093.54 xu | 126,401,224,096.06 xu | 129,727,572,098.59 xu | 133,053,920,101.12 xu | 136,380,268,103.65 xu | 139,706,616,106.18 xu | 143,032,964,108.71 xu | 146,359,312,111.23 xu | 149,685,660,113.76 xu | 153,012,008,116.29 xu | 156,338,356,118.82 xu | 159,664,704,121.35 xu | 162,991,052,123.87 xu | 166,317,400,126.4 xu | 169,643,748,128.93 xu | 172,970,096,131.46 xu | 176,296,444,133.99 xu | 179,622,792,136.51 xu | 182,949,140,139.04 xu | 186,275,488,141.57 xu | 189,601,836,144.1 xu | 192,928,184,146.63 xu | 196,254,532,149.15 xu | 199,580,880,151.68 xu | 202,907,228,154.21 xu | 206,233,576,156.74 xu | 209,559,924,159.27 xu | 212,886,272,161.79 xu | 216,212,620,164.32 xu | 219,538,968,166.85 xu | 222,865,316,169.38 xu | 226,191,664,171.91 xu | 229,518,012,174.43 xu | 232,844,360,176.96 xu | 236,170,708,179.49 xu | 239,497,056,182.02 xu | 242,823,404,184.55 xu | 246,149,752,187.07 xu | 249,476,100,189.6 xu | 252,802,448,192.13 xu | 256,128,796,194.66 xu | 259,455,144,197.19 xu | 262,781,492,199.71 xu | 266,107,840,202.24 xu | 269,434,188,204.77 xu | 272,760,536,207.3 xu | 276,086,884,209.83 xu | 279,413,232,212.35 xu | 282,739,580,214.88 xu | 286,065,928,217.41 xu | 289,392,276,219.94 xu | 292,718,624,222.47 xu | 296,044,972,224.99 xu | 299,371,320,227.52 xu | 302,697,668,230.05 xu | 306,024,016,232.58 xu | 309,350,364,235.11 xu | 312,676,712,237.63 xu | 316,003,060,240.16 xu | 319,329,408,242.69 xu | 322,655,756,245.22 xu | 325,982,104,247.75 xu | 329,308,452,250.27 xu | 332,634,800,252.8 xu |
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 | x units | french; charriere | x units |
---|---|---|---|
1 | ≈ 3326348002.528 | 4 | ≈ 13305392010.112 |
1.5 | ≈ 4989522003.792 | 4.5 | ≈ 14968566011.376 |
2 | ≈ 6652696005.056 | 5 | ≈ 16631740012.64 |
2.5 | ≈ 8315870006.3201 | 5.5 | ≈ 18294914013.904 |
3 | ≈ 9979044007.5841 | 6 | ≈ 19958088015.168 |
The x unit (symbol xu) is a unit of length approximately equal to 0.1 pm (10−13 m). It is used to quote the wavelength of X-rays and gamma rays.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
x unit | xu | ≈ 1.0021×10−13 m | ≈ 1.0021×10−13 m | Metric system Non-SI |
x units | french; charriere | x units | french; charriere |
---|---|---|---|
1 | ≈ 3.0063E-10 | 4 | ≈ 1.20252E-9 |
1.5 | ≈ 4.50945E-10 | 4.5 | ≈ 1.352835E-9 |
2 | ≈ 6.0126E-10 | 5 | ≈ 1.50315E-9 |
2.5 | ≈ 7.51575E-10 | 5.5 | ≈ 1.653465E-9 |
3 | ≈ 9.0189E-10 | 6 | ≈ 1.80378E-9 |
french; charriere | x units |
---|---|
1 | ≈ 3,326,348,002.528 |
3.0063 × 10-10 | ≈ 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 …) |