| rod | 1 rd | 2 rd | 3 rd | 4 rd | 5 rd | 6 rd | 7 rd | 8 rd | 9 rd | 10 rd | 11 rd | 12 rd | 13 rd | 14 rd | 15 rd | 16 rd | 17 rd | 18 rd | 19 rd | 20 rd | 21 rd | 22 rd | 23 rd | 24 rd | 25 rd | 26 rd | 27 rd | 28 rd | 29 rd | 30 rd | 31 rd | 32 rd | 33 rd | 34 rd | 35 rd | 36 rd | 37 rd | 38 rd | 39 rd | 40 rd | 41 rd | 42 rd | 43 rd | 44 rd | 45 rd | 46 rd | 47 rd | 48 rd | 49 rd | 50 rd | 51 rd | 52 rd | 53 rd | 54 rd | 55 rd | 56 rd | 57 rd | 58 rd | 59 rd | 60 rd | 61 rd | 62 rd | 63 rd | 64 rd | 65 rd | 66 rd | 67 rd | 68 rd | 69 rd | 70 rd | 71 rd | 72 rd | 73 rd | 74 rd | 75 rd | 76 rd | 77 rd | 78 rd | 79 rd | 80 rd | 81 rd | 82 rd | 83 rd | 84 rd | 85 rd | 86 rd | 87 rd | 88 rd | 89 rd | 90 rd | 91 rd | 92 rd | 93 rd | 94 rd | 95 rd | 96 rd | 97 rd | 98 rd | 99 rd | 100 rd |
| french; charriere | 15,087.6 F | 30,175.2 F | 45,262.8 F | 60,350.4 F | 75 438 F | 90,525.6 F | 105,613.2 F | 120,700.8 F | 135,788.4 F | 150 876 F | 165,963.6 F | 181,051.2 F | 196,138.8 F | 211,226.4 F | 226 314 F | 241,401.6 F | 256,489.2 F | 271,576.8 F | 286,664.4 F | 301 752 F | 316,839.6 F | 331,927.2 F | 347,014.8 F | 362,102.4 F | 377 190 F | 392,277.6 F | 407,365.2 F | 422,452.8 F | 437,540.4 F | 452 628 F | 467,715.6 F | 482,803.2 F | 497,890.8 F | 512,978.4 F | 528 066 F | 543,153.6 F | 558,241.2 F | 573,328.8 F | 588,416.4 F | 603 504 F | 618,591.6 F | 633,679.2 F | 648,766.8 F | 663,854.4 F | 678 942 F | 694,029.6 F | 709,117.2 F | 724,204.8 F | 739,292.4 F | 754 380 F | 769,467.6 F | 784,555.2 F | 799,642.8 F | 814,730.4 F | 829 818 F | 844,905.6 F | 859,993.2 F | 875,080.8 F | 890,168.4 F | 905 256 F | 920,343.6 F | 935,431.2 F | 950,518.8 F | 965,606.4 F | 980 694 F | 995,781.6 F | 1,010,869.2 F | 1,025,956.8 F | 1,041,044.4 F | 1 056 132 F | 1,071,219.6 F | 1,086,307.2 F | 1,101,394.8 F | 1,116,482.4 F | 1 131 570 F | 1,146,657.6 F | 1,161,745.2 F | 1,176,832.8 F | 1,191,920.4 F | 1 207 008 F | 1,222,095.6 F | 1,237,183.2 F | 1,252,270.8 F | 1,267,358.4 F | 1 282 446 F | 1,297,533.6 F | 1,312,621.2 F | 1,327,708.8 F | 1,342,796.4 F | 1 357 884 F | 1,372,971.6 F | 1,388,059.2 F | 1,403,146.8 F | 1,418,234.4 F | 1 433 322 F | 1,448,409.6 F | 1,463,497.2 F | 1,478,584.8 F | 1,493,672.4 F | 1 508 760 F |
The rod or perch or pole is a surveyors tool and unit of length equal to 5 1⁄2 yards, 16 1⁄2 feet, 1⁄320 of a statute mile or one-fourth of a surveyor's chain and 5.0292 meters.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| rod | rd | ≡ 16 1⁄2 ft | = 5.0292 m | Imperial/US |
| rods | french; charriere | rods | french; charriere |
|---|---|---|---|
| 1 | = 15087.6 | 4 | = 60350.4 |
| 1.5 | = 22631.4 | 4.5 | = 67894.2 |
| 2 | = 30175.2 | 5 | = 75438 |
| 2.5 | = 37719 | 5.5 | = 82981.8 |
| 3 | = 45262.8 | 6 | = 90525.6 |
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 | rods | french; charriere | rods |
|---|---|---|---|
| 1 | = 6.6279593838649E-5 | 4 | = 0.0002651183753546 |
| 1.5 | = 9.9419390757973E-5 | 4.5 | = 0.00029825817227392 |
| 2 | = 0.0001325591876773 | 5 | = 0.00033139796919324 |
| 2.5 | = 0.00016569898459662 | 5.5 | = 0.00036453776611257 |
| 3 | = 0.00019883878151595 | 6 | = 0.00039767756303189 |
| rods | french; charriere |
|---|---|
| 1 | = 15,087.6 |
| 6.6279593838649 × 10-5 | = 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 …) |