| 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 |
| nail (cloth) | 88 nail (cloth) | 176 nail (cloth) | 264 nail (cloth) | 352 nail (cloth) | 440 nail (cloth) | 528 nail (cloth) | 616 nail (cloth) | 704 nail (cloth) | 792 nail (cloth) | 880 nail (cloth) | 968 nail (cloth) | 1 056 nail (cloth) | 1 144 nail (cloth) | 1 232 nail (cloth) | 1 320 nail (cloth) | 1 408 nail (cloth) | 1 496 nail (cloth) | 1 584 nail (cloth) | 1 672 nail (cloth) | 1 760 nail (cloth) | 1 848 nail (cloth) | 1 936 nail (cloth) | 2 024 nail (cloth) | 2 112 nail (cloth) | 2 200 nail (cloth) | 2 288 nail (cloth) | 2 376 nail (cloth) | 2 464 nail (cloth) | 2 552 nail (cloth) | 2 640 nail (cloth) | 2 728 nail (cloth) | 2 816 nail (cloth) | 2 904 nail (cloth) | 2 992 nail (cloth) | 3 080 nail (cloth) | 3 168 nail (cloth) | 3 256 nail (cloth) | 3 344 nail (cloth) | 3 432 nail (cloth) | 3 520 nail (cloth) | 3 608 nail (cloth) | 3 696 nail (cloth) | 3 784 nail (cloth) | 3 872 nail (cloth) | 3 960 nail (cloth) | 4 048 nail (cloth) | 4 136 nail (cloth) | 4 224 nail (cloth) | 4 312 nail (cloth) | 4 400 nail (cloth) | 4 488 nail (cloth) | 4 576 nail (cloth) | 4 664 nail (cloth) | 4 752 nail (cloth) | 4 840 nail (cloth) | 4 928 nail (cloth) | 5 016 nail (cloth) | 5 104 nail (cloth) | 5 192 nail (cloth) | 5 280 nail (cloth) | 5 368 nail (cloth) | 5 456 nail (cloth) | 5 544 nail (cloth) | 5 632 nail (cloth) | 5 720 nail (cloth) | 5 808 nail (cloth) | 5 896 nail (cloth) | 5 984 nail (cloth) | 6 072 nail (cloth) | 6 160 nail (cloth) | 6 248 nail (cloth) | 6 336 nail (cloth) | 6 424 nail (cloth) | 6 512 nail (cloth) | 6 600 nail (cloth) | 6 688 nail (cloth) | 6 776 nail (cloth) | 6 864 nail (cloth) | 6 952 nail (cloth) | 7 040 nail (cloth) | 7 128 nail (cloth) | 7 216 nail (cloth) | 7 304 nail (cloth) | 7 392 nail (cloth) | 7 480 nail (cloth) | 7 568 nail (cloth) | 7 656 nail (cloth) | 7 744 nail (cloth) | 7 832 nail (cloth) | 7 920 nail (cloth) | 8 008 nail (cloth) | 8 096 nail (cloth) | 8 184 nail (cloth) | 8 272 nail (cloth) | 8 360 nail (cloth) | 8 448 nail (cloth) | 8 536 nail (cloth) | 8 624 nail (cloth) | 8 712 nail (cloth) | 8 800 nail (cloth) |
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 | nails (cloth) | rods | nails (cloth) |
|---|---|---|---|
| 1 | = 88 | 4 | = 352 |
| 1.5 | = 132 | 4.5 | = 396 |
| 2 | = 176 | 5 | = 440 |
| 2.5 | = 220 | 5.5 | = 484 |
| 3 | = 264 | 6 | = 528 |
A nail, as a unit of cloth measurement, is generally a sixteenth of a yard or 2 1/4 inches (5.715 cm). The nail was apparently named after the practice of hammering brass nails into the counter at shops where cloth was sold.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| nail (cloth) | ≡ 2 1⁄4 in | = 0.05715 m | Other (Length) |
| nails (cloth) | rods | nails (cloth) | rods |
|---|---|---|---|
| 1 | = 0.011363636363636 | 4 | = 0.045454545454545 |
| 1.5 | = 0.017045454545455 | 4.5 | = 0.051136363636364 |
| 2 | = 0.022727272727273 | 5 | = 0.056818181818182 |
| 2.5 | = 0.028409090909091 | 5.5 | = 0.0625 |
| 3 | = 0.034090909090909 | 6 | = 0.068181818181818 |
| rods | nails (cloth) |
|---|---|
| 1 | = 88 |
| 0.0113636 | = 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 …) |