| 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 |
| cubit | 0.0006667 cubit | 0.0013333 cubit | 0.002 cubit | 0.0026667 cubit | 0.0033333 cubit | 0.004 cubit | 0.0046667 cubit | 0.0053333 cubit | 0.006 cubit | 0.0066667 cubit | 0.0073333 cubit | 0.008 cubit | 0.0086667 cubit | 0.0093333 cubit | 0.01 cubit | 0.0106667 cubit | 0.0113333 cubit | 0.012 cubit | 0.0126667 cubit | 0.0133333 cubit | 0.014 cubit | 0.0146667 cubit | 0.0153333 cubit | 0.016 cubit | 0.0166667 cubit | 0.0173333 cubit | 0.018 cubit | 0.0186667 cubit | 0.0193333 cubit | 0.02 cubit | 0.0206667 cubit | 0.0213333 cubit | 0.022 cubit | 0.0226667 cubit | 0.0233333 cubit | 0.024 cubit | 0.0246667 cubit | 0.0253333 cubit | 0.026 cubit | 0.0266667 cubit | 0.0273333 cubit | 0.028 cubit | 0.0286667 cubit | 0.0293333 cubit | 0.03 cubit | 0.0306667 cubit | 0.0313333 cubit | 0.032 cubit | 0.0326667 cubit | 0.0333333 cubit | 0.034 cubit | 0.0346667 cubit | 0.0353333 cubit | 0.036 cubit | 0.0366667 cubit | 0.0373333 cubit | 0.038 cubit | 0.0386667 cubit | 0.0393333 cubit | 0.04 cubit | 0.0406667 cubit | 0.0413333 cubit | 0.042 cubit | 0.0426667 cubit | 0.0433333 cubit | 0.044 cubit | 0.0446667 cubit | 0.0453333 cubit | 0.046 cubit | 0.0466667 cubit | 0.0473333 cubit | 0.048 cubit | 0.0486667 cubit | 0.0493333 cubit | 0.05 cubit | 0.0506667 cubit | 0.0513333 cubit | 0.052 cubit | 0.0526667 cubit | 0.0533333 cubit | 0.054 cubit | 0.0546667 cubit | 0.0553333 cubit | 0.056 cubit | 0.0566667 cubit | 0.0573333 cubit | 0.058 cubit | 0.0586667 cubit | 0.0593333 cubit | 0.06 cubit | 0.0606667 cubit | 0.0613333 cubit | 0.062 cubit | 0.0626667 cubit | 0.0633333 cubit | 0.064 cubit | 0.0646667 cubit | 0.0653333 cubit | 0.066 cubit | 0.0666667 cubit |
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).
| 1 french; charriere ≈ 0.00066666666666667 cubit | 4 french; charriere ≈ 0.0026666666666667 cubit |
| 1.5 french; charriere ≈ 0.001 cubit | 4.5 french; charriere ≈ 0.003 cubit |
| 2 french; charriere ≈ 0.0013333333333333 cubit | 5 french; charriere ≈ 0.0033333333333333 cubit |
| 2.5 french; charriere ≈ 0.0016666666666667 cubit | 5.5 french; charriere ≈ 0.0036666666666667 cubit |
| 3 french; charriere ≈ 0.002 cubit | 6 french; charriere ≈ 0.004 cubit |
The cubit is an ancient unit based on the forearm length from the tip of the middle finger to the bottom of the elbow. Cubits of various lengths were employed in many parts of the world in antiquity, during the Middle Ages and as recently as Early Modern Times. The term is still used in hedge laying, the length of the forearm being frequently used to determine the interval between stakes placed within the hedge.
| 1 cubit ≈ 1500 french; charriere | 4 cubit ≈ 6000 french; charriere |
| 1.5 cubit ≈ 2250 french; charriere | 4.5 cubit ≈ 6750 french; charriere |
| 2 cubit ≈ 3000 french; charriere | 5 cubit ≈ 7500 french; charriere |
| 2.5 cubit ≈ 3750 french; charriere | 5.5 cubit ≈ 8250 french; charriere |
| 3 cubit ≈ 4500 french; charriere | 6 cubit ≈ 9000 french; charriere |
| 1 french; charriere ≈ 0.0006667 cubit |
| 1 cubit ≈ 1 500 french; charriere |