| barleycorn | 1 barleycorn | 2 barleycorn | 3 barleycorn | 4 barleycorn | 5 barleycorn | 6 barleycorn | 7 barleycorn | 8 barleycorn | 9 barleycorn | 10 barleycorn | 11 barleycorn | 12 barleycorn | 13 barleycorn | 14 barleycorn | 15 barleycorn | 16 barleycorn | 17 barleycorn | 18 barleycorn | 19 barleycorn | 20 barleycorn | 21 barleycorn | 22 barleycorn | 23 barleycorn | 24 barleycorn | 25 barleycorn | 26 barleycorn | 27 barleycorn | 28 barleycorn | 29 barleycorn | 30 barleycorn | 31 barleycorn | 32 barleycorn | 33 barleycorn | 34 barleycorn | 35 barleycorn | 36 barleycorn | 37 barleycorn | 38 barleycorn | 39 barleycorn | 40 barleycorn | 41 barleycorn | 42 barleycorn | 43 barleycorn | 44 barleycorn | 45 barleycorn | 46 barleycorn | 47 barleycorn | 48 barleycorn | 49 barleycorn | 50 barleycorn | 51 barleycorn | 52 barleycorn | 53 barleycorn | 54 barleycorn | 55 barleycorn | 56 barleycorn | 57 barleycorn | 58 barleycorn | 59 barleycorn | 60 barleycorn | 61 barleycorn | 62 barleycorn | 63 barleycorn | 64 barleycorn | 65 barleycorn | 66 barleycorn | 67 barleycorn | 68 barleycorn | 69 barleycorn | 70 barleycorn | 71 barleycorn | 72 barleycorn | 73 barleycorn | 74 barleycorn | 75 barleycorn | 76 barleycorn | 77 barleycorn | 78 barleycorn | 79 barleycorn | 80 barleycorn | 81 barleycorn | 82 barleycorn | 83 barleycorn | 84 barleycorn | 85 barleycorn | 86 barleycorn | 87 barleycorn | 88 barleycorn | 89 barleycorn | 90 barleycorn | 91 barleycorn | 92 barleycorn | 93 barleycorn | 94 barleycorn | 95 barleycorn | 96 barleycorn | 97 barleycorn | 98 barleycorn | 99 barleycorn | 100 barleycorn |
| french; charriere | 25.38 F | 50.76 F | 76.14 F | 101.52 F | 126.9 F | 152.28 F | 177.66 F | 203.04 F | 228.42 F | 253.8 F | 279.18 F | 304.56 F | 329.94 F | 355.32 F | 380.7 F | 406.08 F | 431.46 F | 456.84 F | 482.22 F | 507.6 F | 532.98 F | 558.36 F | 583.74 F | 609.12 F | 634.5 F | 659.88 F | 685.26 F | 710.64 F | 736.02 F | 761.4 F | 786.78 F | 812.16 F | 837.54 F | 862.92 F | 888.3 F | 913.68 F | 939.06 F | 964.44 F | 989.82 F | 1,015.2 F | 1,040.58 F | 1,065.96 F | 1,091.34 F | 1,116.72 F | 1,142.1 F | 1,167.48 F | 1,192.86 F | 1,218.24 F | 1,243.62 F | 1 269 F | 1,294.38 F | 1,319.76 F | 1,345.14 F | 1,370.52 F | 1,395.9 F | 1,421.28 F | 1,446.66 F | 1,472.04 F | 1,497.42 F | 1,522.8 F | 1,548.18 F | 1,573.56 F | 1,598.94 F | 1,624.32 F | 1,649.7 F | 1,675.08 F | 1,700.46 F | 1,725.84 F | 1,751.22 F | 1,776.6 F | 1,801.98 F | 1,827.36 F | 1,852.74 F | 1,878.12 F | 1,903.5 F | 1,928.88 F | 1,954.26 F | 1,979.64 F | 2,005.02 F | 2,030.4 F | 2,055.78 F | 2,081.16 F | 2,106.54 F | 2,131.92 F | 2,157.3 F | 2,182.68 F | 2,208.06 F | 2,233.44 F | 2,258.82 F | 2,284.2 F | 2,309.58 F | 2,334.96 F | 2,360.34 F | 2,385.72 F | 2,411.1 F | 2,436.48 F | 2,461.86 F | 2,487.24 F | 2,512.62 F | 2 538 F |
The barleycorn is a small English unit of length equal to 1⁄3 of an inch (i.e., close to 0.8467 cm) still used in Great Britain and Ireland as a determiner of shoe sizes.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| barleycorn | = 1⁄3 in | ≈ 8.46×10−3 m | Imperial/US |
| barleycorns | french; charriere | barleycorns | french; charriere |
|---|---|---|---|
| 1 | ≈ 25.38 | 4 | ≈ 101.52 |
| 1.5 | ≈ 38.07 | 4.5 | ≈ 114.21 |
| 2 | ≈ 50.76 | 5 | ≈ 126.9 |
| 2.5 | ≈ 63.45 | 5.5 | ≈ 139.59 |
| 3 | ≈ 76.14 | 6 | ≈ 152.28 |
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 | barleycorns | french; charriere | barleycorns |
|---|---|---|---|
| 1 | ≈ 0.03940110323089 | 4 | ≈ 0.15760441292356 |
| 1.5 | ≈ 0.059101654846336 | 4.5 | ≈ 0.17730496453901 |
| 2 | ≈ 0.078802206461781 | 5 | ≈ 0.19700551615445 |
| 2.5 | ≈ 0.098502758077226 | 5.5 | ≈ 0.2167060677699 |
| 3 | ≈ 0.11820330969267 | 6 | ≈ 0.23640661938534 |
| barleycorns | french; charriere |
|---|---|
| 1 | ≈ 25.38 |
| 0.0394011 | ≈ 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 …) |