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 |
point (PostScript) | 0.9450903 pt | 1.8901805 pt | 2.8352708 pt | 3.7803610 pt | 4.7254513 pt | 5.6705415 pt | 6.6156318 pt | 7.5607220 pt | 8.5058123 pt | 9.4509026 pt | 10.3959928 pt | 11.3410831 pt | 12.2861733 pt | 13.2312636 pt | 14.1763538 pt | 15.1214441 pt | 16.0665344 pt | 17.0116246 pt | 17.9567149 pt | 18.9018051 pt | 19.8468954 pt | 20.7919856 pt | 21.7370759 pt | 22.6821661 pt | 23.6272564 pt | 24.5723467 pt | 25.5174369 pt | 26.4625272 pt | 27.4076174 pt | 28.3527077 pt | 29.2977979 pt | 30.2428882 pt | 31.1879785 pt | 32.1330687 pt | 33.0781590 pt | 34.0232492 pt | 34.9683395 pt | 35.9134297 pt | 36.8585200 pt | 37.8036102 pt | 38.7487005 pt | 39.6937908 pt | 40.6388810 pt | 41.5839713 pt | 42.5290615 pt | 43.4741518 pt | 44.4192420 pt | 45.3643323 pt | 46.3094225 pt | 47.2545128 pt | 48.1996031 pt | 49.1446933 pt | 50.0897836 pt | 51.0348738 pt | 51.9799641 pt | 52.9250543 pt | 53.8701446 pt | 54.8152349 pt | 55.7603251 pt | 56.7054154 pt | 57.6505056 pt | 58.5955959 pt | 59.5406861 pt | 60.4857764 pt | 61.4308666 pt | 62.3759569 pt | 63.3210472 pt | 64.2661374 pt | 65.2112277 pt | 66.1563179 pt | 67.1014082 pt | 68.0464984 pt | 68.9915887 pt | 69.9366790 pt | 70.8817692 pt | 71.8268595 pt | 72.7719497 pt | 73.7170400 pt | 74.6621302 pt | 75.6072205 pt | 76.5523107 pt | 77.4974010 pt | 78.4424913 pt | 79.3875815 pt | 80.3326718 pt | 81.2777620 pt | 82.2228523 pt | 83.1679425 pt | 84.1130328 pt | 85.0581231 pt | 86.0032133 pt | 86.9483036 pt | 87.8933938 pt | 88.8384841 pt | 89.7835743 pt | 90.7286646 pt | 91.6737548 pt | 92.6188451 pt | 93.5639354 pt | 94.5090256 pt |
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 | points (PostScript) | french; charriere | points (PostScript) |
---|---|---|---|
1 | = 0.94509025611946 | 4 | = 3.7803610244778 |
1.5 | = 1.4176353841792 | 4.5 | = 4.2529061525376 |
2 | = 1.8901805122389 | 5 | = 4.7254512805973 |
2.5 | = 2.3627256402986 | 5.5 | = 5.197996408657 |
3 | = 2.8352707683584 | 6 | = 5.6705415367168 |
= 0.0003527 m
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
point (PostScript) | pt | ≡ 1⁄72 in | = 0.0003527 m | Other (Length) |
points (PostScript) | french; charriere | points (PostScript) | french; charriere |
---|---|---|---|
1 | = 1.0581 | 4 | = 4.2324 |
1.5 | = 1.58715 | 4.5 | = 4.76145 |
2 | = 2.1162 | 5 | = 5.2905 |
2.5 | = 2.64525 | 5.5 | = 5.81955 |
3 | = 3.1743 | 6 | = 6.3486 |
french; charriere | points (PostScript) |
---|---|
1 | = 0.9450903 |
1.0581 | = 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 …) |