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 |
ell | 4.4 ell | 8.8 ell | 13.2 ell | 17.6 ell | 22 ell | 26.4 ell | 30.8 ell | 35.2 ell | 39.6 ell | 44 ell | 48.4 ell | 52.8 ell | 57.2 ell | 61.6 ell | 66 ell | 70.4 ell | 74.8 ell | 79.2 ell | 83.6 ell | 88 ell | 92.4 ell | 96.8 ell | 101.2 ell | 105.6 ell | 110 ell | 114.4 ell | 118.8 ell | 123.2 ell | 127.6 ell | 132 ell | 136.4 ell | 140.8 ell | 145.2 ell | 149.6 ell | 154 ell | 158.4 ell | 162.8 ell | 167.2 ell | 171.6 ell | 176 ell | 180.4 ell | 184.8 ell | 189.2 ell | 193.6 ell | 198 ell | 202.4 ell | 206.8 ell | 211.2 ell | 215.6 ell | 220 ell | 224.4 ell | 228.8 ell | 233.2 ell | 237.6 ell | 242 ell | 246.4 ell | 250.8 ell | 255.2 ell | 259.6 ell | 264 ell | 268.4 ell | 272.8 ell | 277.2 ell | 281.6 ell | 286 ell | 290.4 ell | 294.8 ell | 299.2 ell | 303.6 ell | 308 ell | 312.4 ell | 316.8 ell | 321.2 ell | 325.6 ell | 330 ell | 334.4 ell | 338.8 ell | 343.2 ell | 347.6 ell | 352 ell | 356.4 ell | 360.8 ell | 365.2 ell | 369.6 ell | 374 ell | 378.4 ell | 382.8 ell | 387.2 ell | 391.6 ell | 396 ell | 400.4 ell | 404.8 ell | 409.2 ell | 413.6 ell | 418 ell | 422.4 ell | 426.8 ell | 431.2 ell | 435.6 ell | 440 ell |
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 | ell | rods | ell |
---|---|---|---|
1 | = 4.4 | 4 | = 17.6 |
1.5 | = 6.6 | 4.5 | = 19.8 |
2 | = 8.8 | 5 | = 22 |
2.5 | = 11 | 5.5 | = 24.2 |
3 | = 13.2 | 6 | = 26.4 |
An ell (from Proto-Germanic *alinō, cognate with Latin ulna) is a unit of measurement, originally a cubit, i.e., approximating the length of a man's arm from the elbow ("elbow" means the bend or bow of the ell or arm) to the tip of the middle finger, or about 18 inches (457 mm); in later usage, any of several longer units.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ell | ell | ≡ 45 in (In England usually) | = 1.143 m | Other (Length) |
ell | rods | ell | rods |
---|---|---|---|
1 | = 0.22727272727273 | 4 | = 0.90909090909091 |
1.5 | = 0.34090909090909 | 4.5 | = 1.0227272727273 |
2 | = 0.45454545454545 | 5 | = 1.1363636363636 |
2.5 | = 0.56818181818182 | 5.5 | = 1.25 |
3 | = 0.68181818181818 | 6 | = 1.3636363636364 |
rods | ell |
---|---|
1 | = 4.4 |
0.2272727 | = 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 …) |