| eighth circle | 1 1/8 circle | 2 1/8 circle | 3 1/8 circle | 4 1/8 circle | 5 1/8 circle | 6 1/8 circle | 7 1/8 circle | 8 1/8 circle | 9 1/8 circle | 10 1/8 circle | 11 1/8 circle | 12 1/8 circle | 13 1/8 circle | 14 1/8 circle | 15 1/8 circle | 16 1/8 circle | 17 1/8 circle | 18 1/8 circle | 19 1/8 circle | 20 1/8 circle | 21 1/8 circle | 22 1/8 circle | 23 1/8 circle | 24 1/8 circle | 25 1/8 circle | 26 1/8 circle | 27 1/8 circle | 28 1/8 circle | 29 1/8 circle | 30 1/8 circle | 31 1/8 circle | 32 1/8 circle | 33 1/8 circle | 34 1/8 circle | 35 1/8 circle | 36 1/8 circle | 37 1/8 circle | 38 1/8 circle | 39 1/8 circle | 40 1/8 circle | 41 1/8 circle | 42 1/8 circle | 43 1/8 circle | 44 1/8 circle | 45 1/8 circle | 46 1/8 circle | 47 1/8 circle | 48 1/8 circle | 49 1/8 circle | 50 1/8 circle | 51 1/8 circle | 52 1/8 circle | 53 1/8 circle | 54 1/8 circle | 55 1/8 circle | 56 1/8 circle | 57 1/8 circle | 58 1/8 circle | 59 1/8 circle | 60 1/8 circle | 61 1/8 circle | 62 1/8 circle | 63 1/8 circle | 64 1/8 circle | 65 1/8 circle | 66 1/8 circle | 67 1/8 circle | 68 1/8 circle | 69 1/8 circle | 70 1/8 circle | 71 1/8 circle | 72 1/8 circle | 73 1/8 circle | 74 1/8 circle | 75 1/8 circle | 76 1/8 circle | 77 1/8 circle | 78 1/8 circle | 79 1/8 circle | 80 1/8 circle | 81 1/8 circle | 82 1/8 circle | 83 1/8 circle | 84 1/8 circle | 85 1/8 circle | 86 1/8 circle | 87 1/8 circle | 88 1/8 circle | 89 1/8 circle | 90 1/8 circle | 91 1/8 circle | 92 1/8 circle | 93 1/8 circle | 94 1/8 circle | 95 1/8 circle | 96 1/8 circle | 97 1/8 circle | 98 1/8 circle | 99 1/8 circle | 100 1/8 circle |
| angular mil | 50,929.5826582 µ | 101,859.1653163 µ | 152,788.7479745 µ | 203,718.3306327 µ | 254,647.9132909 µ | 305,577.4959490 µ | 356,507.0786072 µ | 407,436.6612654 µ | 458,366.2439235 µ | 509,295.8265817 µ | 560,225.4092399 µ | 611,154.9918981 µ | 662,084.5745562 µ | 713,014.1572144 µ | 763,943.7398726 µ | 814,873.3225307 µ | 865,802.9051889 µ | 916,732.4878471 µ | 967,662.0705053 µ | 1,018,591.6531634 µ | 1,069,521.2358216 µ | 1,120,450.8184798 µ | 1,171,380.4011379 µ | 1,222,309.9837961 µ | 1,273,239.5664543 µ | 1,324,169.1491125 µ | 1,375,098.7317706 µ | 1,426,028.3144288 µ | 1,476,957.897087 µ | 1,527,887.4797451 µ | 1,578,817.0624033 µ | 1,629,746.6450615 µ | 1,680,676.2277197 µ | 1,731,605.8103778 µ | 1,782,535.393036 µ | 1,833,464.9756942 µ | 1,884,394.5583523 µ | 1,935,324.1410105 µ | 1,986,253.7236687 µ | 2,037,183.3063269 µ | 2,088,112.888985 µ | 2,139,042.4716432 µ | 2,189,972.0543014 µ | 2,240,901.6369595 µ | 2,291,831.2196177 µ | 2,342,760.8022759 µ | 2,393,690.3849341 µ | 2,444,619.9675922 µ | 2,495,549.5502504 µ | 2,546,479.1329086 µ | 2,597,408.7155667 µ | 2,648,338.2982249 µ | 2,699,267.8808831 µ | 2,750,197.4635413 µ | 2,801,127.0461994 µ | 2,852,056.6288576 µ | 2,902,986.2115158 µ | 2,953,915.7941739 µ | 3,004,845.3768321 µ | 3,055,774.9594903 µ | 3,106,704.5421485 µ | 3,157,634.1248066 µ | 3,208,563.7074648 µ | 3,259,493.290123 µ | 3,310,422.8727811 µ | 3,361,352.4554393 µ | 3,412,282.0380975 µ | 3,463,211.6207557 µ | 3,514,141.2034138 µ | 3,565,070.786072 µ | 3,616,000.3687302 µ | 3,666,929.9513883 µ | 3,717,859.5340465 µ | 3,768,789.1167047 µ | 3,819,718.6993629 µ | 3,870,648.282021 µ | 3,921,577.8646792 µ | 3,972,507.4473374 µ | 4,023,437.0299955 µ | 4,074,366.6126537 µ | 4,125,296.1953119 µ | 4,176,225.7779701 µ | 4,227,155.3606282 µ | 4,278,084.9432864 µ | 4,329,014.5259446 µ | 4,379,944.1086028 µ | 4,430,873.6912609 µ | 4,481,803.2739191 µ | 4,532,732.8565773 µ | 4,583,662.4392354 µ | 4,634,592.0218936 µ | 4,685,521.6045518 µ | 4,736,451.18721 µ | 4,787,380.7698681 µ | 4,838,310.3525263 µ | 4,889,239.9351845 µ | 4,940,169.5178426 µ | 4,991,099.1005008 µ | 5,042,028.683159 µ | 5,092,958.2658172 µ |
1/8 circle or eighth circle is equal to 360/8 = 45°. Plural name is eighth circles.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| eighth circle | 1/8 circle | ≡ 45 ° | = 0.78539815 rad | Metric system SI |
| eighth circles | angular mils | eighth circles | angular mils |
|---|---|---|---|
| 1 | ≈ 50929.582658172 | 6 | ≈ 305577.49594903 |
| 2 | ≈ 101859.16531634 | 7 | ≈ 356507.0786072 |
| 3 | ≈ 152788.74797451 | 8 | ≈ 407436.66126537 |
| 4 | ≈ 203718.33063269 | 9 | ≈ 458366.24392354 |
| 5 | ≈ 254647.91329086 | 10 | ≈ 509295.82658172 |
A angular mil is the unit of angular measurement equal to 1/6400 of a complete circle. At 1000 metres one mil subtends about one metre (~0,98 m). Also 1/6000 and 1/6300 are used in other countries.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| angular mil | µ | ≡ 2π⁄6400 rad | ≈ 0.981748×10−3 rad | Metric system SI |
| angular mils | eighth circles | angular mils | eighth circles |
|---|---|---|---|
| 1 | ≈ 1.963495375E-5 | 6 | ≈ 0.0001178097225 |
| 2 | ≈ 3.92699075E-5 | 7 | ≈ 0.00013744467625 |
| 3 | ≈ 5.890486125E-5 | 8 | ≈ 0.00015707963 |
| 4 | ≈ 7.8539815E-5 | 9 | ≈ 0.00017671458375 |
| 5 | ≈ 9.817476875E-5 | 10 | ≈ 0.0001963495375 |
| eighth circles | angular mils |
|---|---|
| 1 | ≈ 50,929.5826582 |
| 1.963495375 × 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 …) |