point (Didot; European) | 1 pt | 2 pt | 3 pt | 4 pt | 5 pt | 6 pt | 7 pt | 8 pt | 9 pt | 10 pt | 11 pt | 12 pt | 13 pt | 14 pt | 15 pt | 16 pt | 17 pt | 18 pt | 19 pt | 20 pt | 21 pt | 22 pt | 23 pt | 24 pt | 25 pt | 26 pt | 27 pt | 28 pt | 29 pt | 30 pt | 31 pt | 32 pt | 33 pt | 34 pt | 35 pt | 36 pt | 37 pt | 38 pt | 39 pt | 40 pt | 41 pt | 42 pt | 43 pt | 44 pt | 45 pt | 46 pt | 47 pt | 48 pt | 49 pt | 50 pt | 51 pt | 52 pt | 53 pt | 54 pt | 55 pt | 56 pt | 57 pt | 58 pt | 59 pt | 60 pt | 61 pt | 62 pt | 63 pt | 64 pt | 65 pt | 66 pt | 67 pt | 68 pt | 69 pt | 70 pt | 71 pt | 72 pt | 73 pt | 74 pt | 75 pt | 76 pt | 77 pt | 78 pt | 79 pt | 80 pt | 81 pt | 82 pt | 83 pt | 84 pt | 85 pt | 86 pt | 87 pt | 88 pt | 89 pt | 90 pt | 91 pt | 92 pt | 93 pt | 94 pt | 95 pt | 96 pt | 97 pt | 98 pt | 99 pt | 100 pt |
french; charriere | 1.1278196 F | 2.2556391 F | 3.3834587 F | 4.5112782 F | 5.6390978 F | 6.7669173 F | 7.8947369 F | 9.0225564 F | 10.1503760 F | 11.2781955 F | 12.4060151 F | 13.5338346 F | 14.6616542 F | 15.7894737 F | 16.9172933 F | 18.0451128 F | 19.1729324 F | 20.3007519 F | 21.4285715 F | 22.556391 F | 23.6842106 F | 24.8120301 F | 25.9398497 F | 27.0676692 F | 28.1954888 F | 29.3233083 F | 30.4511279 F | 31.5789474 F | 32.7067670 F | 33.8345865 F | 34.9624061 F | 36.0902256 F | 37.2180452 F | 38.3458647 F | 39.4736843 F | 40.6015038 F | 41.7293234 F | 42.8571429 F | 43.9849625 F | 45.112782 F | 46.2406016 F | 47.3684211 F | 48.4962407 F | 49.6240602 F | 50.7518798 F | 51.8796993 F | 53.0075189 F | 54.1353384 F | 55.2631580 F | 56.3909775 F | 57.5187971 F | 58.6466166 F | 59.7744362 F | 60.9022557 F | 62.0300753 F | 63.1578948 F | 64.2857144 F | 65.4135339 F | 66.5413535 F | 67.669173 F | 68.7969926 F | 69.9248121 F | 71.0526317 F | 72.1804512 F | 73.3082708 F | 74.4360903 F | 75.5639099 F | 76.6917294 F | 77.8195490 F | 78.9473685 F | 80.0751881 F | 81.2030076 F | 82.3308272 F | 83.4586467 F | 84.5864663 F | 85.7142858 F | 86.8421054 F | 87.9699249 F | 89.0977445 F | 90.225564 F | 91.3533836 F | 92.4812031 F | 93.6090227 F | 94.7368422 F | 95.8646618 F | 96.9924813 F | 98.1203009 F | 99.2481204 F | 100.3759400 F | 101.5037595 F | 102.6315791 F | 103.7593986 F | 104.8872182 F | 106.0150377 F | 107.1428573 F | 108.2706768 F | 109.3984964 F | 110.5263159 F | 111.6541355 F | 112.781955 F |
In typography, the point is the smallest unit of measure. It is used for measuring font size, leading, and other items on a printed page.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
point (Didot; European) | pt | ≡ 1⁄12 × 1⁄72 of pied du roi; | ≈ 0.00037597 m; | Other (Length) |
points (Didot; European) | french; charriere | points (Didot; European) | french; charriere |
---|---|---|---|
1 | ≈ 1.12781955 | 4 | ≈ 4.5112782 |
1.5 | ≈ 1.691729325 | 4.5 | ≈ 5.075187975 |
2 | ≈ 2.2556391 | 5 | ≈ 5.63909775 |
2.5 | ≈ 2.819548875 | 5.5 | ≈ 6.203007525 |
3 | ≈ 3.38345865 | 6 | ≈ 6.7669173 |
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 (Didot; European) | french; charriere | points (Didot; European) |
---|---|---|---|
1 | ≈ 0.88666666578 | 4 | ≈ 3.54666666312 |
1.5 | ≈ 1.32999999867 | 4.5 | ≈ 3.98999999601 |
2 | ≈ 1.77333333156 | 5 | ≈ 4.4333333289 |
2.5 | ≈ 2.21666666445 | 5.5 | ≈ 4.87666666179 |
3 | ≈ 2.65999999734 | 6 | ≈ 5.31999999468 |
points (Didot; European) | french; charriere |
---|---|
1 | ≈ 1.1278196 |
0.8866667 | ≈ 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 …) |