x unit | 1 xu | 2 xu | 3 xu | 4 xu | 5 xu | 6 xu | 7 xu | 8 xu | 9 xu | 10 xu | 11 xu | 12 xu | 13 xu | 14 xu | 15 xu | 16 xu | 17 xu | 18 xu | 19 xu | 20 xu | 21 xu | 22 xu | 23 xu | 24 xu | 25 xu | 26 xu | 27 xu | 28 xu | 29 xu | 30 xu | 31 xu | 32 xu | 33 xu | 34 xu | 35 xu | 36 xu | 37 xu | 38 xu | 39 xu | 40 xu | 41 xu | 42 xu | 43 xu | 44 xu | 45 xu | 46 xu | 47 xu | 48 xu | 49 xu | 50 xu | 51 xu | 52 xu | 53 xu | 54 xu | 55 xu | 56 xu | 57 xu | 58 xu | 59 xu | 60 xu | 61 xu | 62 xu | 63 xu | 64 xu | 65 xu | 66 xu | 67 xu | 68 xu | 69 xu | 70 xu | 71 xu | 72 xu | 73 xu | 74 xu | 75 xu | 76 xu | 77 xu | 78 xu | 79 xu | 80 xu | 81 xu | 82 xu | 83 xu | 84 xu | 85 xu | 86 xu | 87 xu | 88 xu | 89 xu | 90 xu | 91 xu | 92 xu | 93 xu | 94 xu | 95 xu | 96 xu | 97 xu | 98 xu | 99 xu | 100 xu |
french; charriere | 3.0063 × 10-10 F | 6.0126 × 10-10 F | 9.0189 × 10-10 F | 1.20252 × 10-9 F | 1.50315 × 10-9 F | 1.80378 × 10-9 F | 2.10441 × 10-9 F | 2.40504 × 10-9 F | 2.70567 × 10-9 F | 3.0063 × 10-9 F | 3.30693 × 10-9 F | 3.60756 × 10-9 F | 3.90819 × 10-9 F | 4.20882 × 10-9 F | 4.50945 × 10-9 F | 4.81008 × 10-9 F | 5.11071 × 10-9 F | 5.41134 × 10-9 F | 5.71197 × 10-9 F | 6.0126 × 10-9 F | 6.31323 × 10-9 F | 6.61386 × 10-9 F | 6.91449 × 10-9 F | 7.21512 × 10-9 F | 7.51575 × 10-9 F | 7.81638 × 10-9 F | 8.11701 × 10-9 F | 8.41764 × 10-9 F | 8.71827 × 10-9 F | 9.0189 × 10-9 F | 9.31953 × 10-9 F | 9.62016 × 10-9 F | 9.92079 × 10-9 F | 1.022142 × 10-8 F | 1.052205 × 10-8 F | 1.082268 × 10-8 F | 1.112331 × 10-8 F | 1.142394 × 10-8 F | 1.172457 × 10-8 F | 1.20252 × 10-8 F | 1.232583 × 10-8 F | 1.262646 × 10-8 F | 1.292709 × 10-8 F | 1.322772 × 10-8 F | 1.352835 × 10-8 F | 1.382898 × 10-8 F | 1.412961 × 10-8 F | 1.443024 × 10-8 F | 1.473087 × 10-8 F | 1.50315 × 10-8 F | 1.533213 × 10-8 F | 1.563276 × 10-8 F | 1.593339 × 10-8 F | 1.623402 × 10-8 F | 1.653465 × 10-8 F | 1.683528 × 10-8 F | 1.713591 × 10-8 F | 1.743654 × 10-8 F | 1.773717 × 10-8 F | 1.80378 × 10-8 F | 1.833843 × 10-8 F | 1.863906 × 10-8 F | 1.893969 × 10-8 F | 1.924032 × 10-8 F | 1.954095 × 10-8 F | 1.984158 × 10-8 F | 2.014221 × 10-8 F | 2.044284 × 10-8 F | 2.074347 × 10-8 F | 2.10441 × 10-8 F | 2.134473 × 10-8 F | 2.164536 × 10-8 F | 2.194599 × 10-8 F | 2.224662 × 10-8 F | 2.254725 × 10-8 F | 2.284788 × 10-8 F | 2.314851 × 10-8 F | 2.344914 × 10-8 F | 2.374977 × 10-8 F | 2.40504 × 10-8 F | 2.435103 × 10-8 F | 2.465166 × 10-8 F | 2.495229 × 10-8 F | 2.525292 × 10-8 F | 2.555355 × 10-8 F | 2.585418 × 10-8 F | 2.615481 × 10-8 F | 2.645544 × 10-8 F | 2.675607 × 10-8 F | 2.70567 × 10-8 F | 2.735733 × 10-8 F | 2.765796 × 10-8 F | 2.795859 × 10-8 F | 2.825922 × 10-8 F | 2.855985 × 10-8 F | 2.886048 × 10-8 F | 2.916111 × 10-8 F | 2.946174 × 10-8 F | 2.976237 × 10-8 F | 3.0063 × 10-8 F |
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 |
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 |
x units | french; charriere |
---|---|
1 | ≈ 3.0063 × 10-10 |
3,326,348,002.528 | ≈ 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 …) |