| nail (cloth) | 1 nail (cloth) | 2 nail (cloth) | 3 nail (cloth) | 4 nail (cloth) | 5 nail (cloth) | 6 nail (cloth) | 7 nail (cloth) | 8 nail (cloth) | 9 nail (cloth) | 10 nail (cloth) | 11 nail (cloth) | 12 nail (cloth) | 13 nail (cloth) | 14 nail (cloth) | 15 nail (cloth) | 16 nail (cloth) | 17 nail (cloth) | 18 nail (cloth) | 19 nail (cloth) | 20 nail (cloth) | 21 nail (cloth) | 22 nail (cloth) | 23 nail (cloth) | 24 nail (cloth) | 25 nail (cloth) | 26 nail (cloth) | 27 nail (cloth) | 28 nail (cloth) | 29 nail (cloth) | 30 nail (cloth) | 31 nail (cloth) | 32 nail (cloth) | 33 nail (cloth) | 34 nail (cloth) | 35 nail (cloth) | 36 nail (cloth) | 37 nail (cloth) | 38 nail (cloth) | 39 nail (cloth) | 40 nail (cloth) | 41 nail (cloth) | 42 nail (cloth) | 43 nail (cloth) | 44 nail (cloth) | 45 nail (cloth) | 46 nail (cloth) | 47 nail (cloth) | 48 nail (cloth) | 49 nail (cloth) | 50 nail (cloth) | 51 nail (cloth) | 52 nail (cloth) | 53 nail (cloth) | 54 nail (cloth) | 55 nail (cloth) | 56 nail (cloth) | 57 nail (cloth) | 58 nail (cloth) | 59 nail (cloth) | 60 nail (cloth) | 61 nail (cloth) | 62 nail (cloth) | 63 nail (cloth) | 64 nail (cloth) | 65 nail (cloth) | 66 nail (cloth) | 67 nail (cloth) | 68 nail (cloth) | 69 nail (cloth) | 70 nail (cloth) | 71 nail (cloth) | 72 nail (cloth) | 73 nail (cloth) | 74 nail (cloth) | 75 nail (cloth) | 76 nail (cloth) | 77 nail (cloth) | 78 nail (cloth) | 79 nail (cloth) | 80 nail (cloth) | 81 nail (cloth) | 82 nail (cloth) | 83 nail (cloth) | 84 nail (cloth) | 85 nail (cloth) | 86 nail (cloth) | 87 nail (cloth) | 88 nail (cloth) | 89 nail (cloth) | 90 nail (cloth) | 91 nail (cloth) | 92 nail (cloth) | 93 nail (cloth) | 94 nail (cloth) | 95 nail (cloth) | 96 nail (cloth) | 97 nail (cloth) | 98 nail (cloth) | 99 nail (cloth) | 100 nail (cloth) |
| micron | 57 150 μm | 114 300 μm | 171 450 μm | 228 600 μm | 285 750 μm | 342 900 μm | 400 050 μm | 457 200 μm | 514 350 μm | 571 500 μm | 628 650 μm | 685 800 μm | 742 950 μm | 800 100 μm | 857 250 μm | 914 400 μm | 971 550 μm | 1 028 700 μm | 1 085 850 μm | 1 143 000 μm | 1 200 150 μm | 1 257 300 μm | 1 314 450 μm | 1 371 600 μm | 1 428 750 μm | 1 485 900 μm | 1 543 050 μm | 1 600 200 μm | 1 657 350 μm | 1 714 500 μm | 1 771 650 μm | 1 828 800 μm | 1 885 950 μm | 1 943 100 μm | 2 000 250 μm | 2 057 400 μm | 2 114 550 μm | 2 171 700 μm | 2 228 850 μm | 2 286 000 μm | 2 343 150 μm | 2 400 300 μm | 2 457 450 μm | 2 514 600 μm | 2 571 750 μm | 2 628 900 μm | 2 686 050 μm | 2 743 200 μm | 2 800 350 μm | 2 857 500 μm | 2 914 650 μm | 2 971 800 μm | 3 028 950 μm | 3 086 100 μm | 3 143 250 μm | 3 200 400 μm | 3 257 550 μm | 3 314 700 μm | 3 371 850 μm | 3 429 000 μm | 3 486 150 μm | 3 543 300 μm | 3 600 450 μm | 3 657 600 μm | 3 714 750 μm | 3 771 900 μm | 3 829 050 μm | 3 886 200 μm | 3 943 350 μm | 4 000 500 μm | 4 057 650 μm | 4 114 800 μm | 4 171 950 μm | 4 229 100 μm | 4 286 250 μm | 4 343 400 μm | 4 400 550 μm | 4 457 700 μm | 4 514 850 μm | 4 572 000 μm | 4 629 150 μm | 4 686 300 μm | 4 743 450 μm | 4 800 600 μm | 4 857 750 μm | 4 914 900 μm | 4 972 050 μm | 5 029 200 μm | 5 086 350 μm | 5 143 500 μm | 5 200 650 μm | 5 257 800 μm | 5 314 950 μm | 5 372 100 μm | 5 429 250 μm | 5 486 400 μm | 5 543 550 μm | 5 600 700 μm | 5 657 850 μm | 5 715 000 μm |
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) | micron | nails (cloth) | micron |
|---|---|---|---|
| 1 | = 57150 | 4 | = 228600 |
| 1.5 | = 85725 | 4.5 | = 257175 |
| 2 | = 114300 | 5 | = 285750 |
| 2.5 | = 142875 | 5.5 | = 314325 |
| 3 | = 171450 | 6 | = 342900 |
The micron (SI symbol: μm) or micrometer is an SI derived unit of length equaling 1×10−6 of a metre (SI standard prefix "micro-" = 10−6); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| micron | μm | ≡ 1×10−6 m | ≡ 1×10−6 m | Metric system Non-SI |
| micron | nails (cloth) | micron | nails (cloth) |
|---|---|---|---|
| 1 | = 1.7497812773403E-5 | 4 | = 6.9991251093613E-5 |
| 1.5 | = 2.6246719160105E-5 | 4.5 | = 7.8740157480315E-5 |
| 2 | = 3.4995625546807E-5 | 5 | = 8.7489063867017E-5 |
| 2.5 | = 4.3744531933508E-5 | 5.5 | = 9.6237970253718E-5 |
| 3 | = 5.249343832021E-5 | 6 | = 0.00010498687664042 |
| nails (cloth) | micron |
|---|---|
| 1 | = 57 150 |
| 1.7497812773403 × 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 …) |