helf circle | 1 1/2 circle | 2 1/2 circle | 3 1/2 circle | 4 1/2 circle | 5 1/2 circle | 6 1/2 circle | 7 1/2 circle | 8 1/2 circle | 9 1/2 circle | 10 1/2 circle | 11 1/2 circle | 12 1/2 circle | 13 1/2 circle | 14 1/2 circle | 15 1/2 circle | 16 1/2 circle | 17 1/2 circle | 18 1/2 circle | 19 1/2 circle | 20 1/2 circle | 21 1/2 circle | 22 1/2 circle | 23 1/2 circle | 24 1/2 circle | 25 1/2 circle | 26 1/2 circle | 27 1/2 circle | 28 1/2 circle | 29 1/2 circle | 30 1/2 circle | 31 1/2 circle | 32 1/2 circle | 33 1/2 circle | 34 1/2 circle | 35 1/2 circle | 36 1/2 circle | 37 1/2 circle | 38 1/2 circle | 39 1/2 circle | 40 1/2 circle | 41 1/2 circle | 42 1/2 circle | 43 1/2 circle | 44 1/2 circle | 45 1/2 circle | 46 1/2 circle | 47 1/2 circle | 48 1/2 circle | 49 1/2 circle | 50 1/2 circle | 51 1/2 circle | 52 1/2 circle | 53 1/2 circle | 54 1/2 circle | 55 1/2 circle | 56 1/2 circle | 57 1/2 circle | 58 1/2 circle | 59 1/2 circle | 60 1/2 circle | 61 1/2 circle | 62 1/2 circle | 63 1/2 circle | 64 1/2 circle | 65 1/2 circle | 66 1/2 circle | 67 1/2 circle | 68 1/2 circle | 69 1/2 circle | 70 1/2 circle | 71 1/2 circle | 72 1/2 circle | 73 1/2 circle | 74 1/2 circle | 75 1/2 circle | 76 1/2 circle | 77 1/2 circle | 78 1/2 circle | 79 1/2 circle | 80 1/2 circle | 81 1/2 circle | 82 1/2 circle | 83 1/2 circle | 84 1/2 circle | 85 1/2 circle | 86 1/2 circle | 87 1/2 circle | 88 1/2 circle | 89 1/2 circle | 90 1/2 circle | 91 1/2 circle | 92 1/2 circle | 93 1/2 circle | 94 1/2 circle | 95 1/2 circle | 96 1/2 circle | 97 1/2 circle | 98 1/2 circle | 99 1/2 circle | 100 1/2 circle |
angular mil | 203,718.3306327 µ | 407,436.6612654 µ | 611,154.9918981 µ | 814,873.3225307 µ | 1,018,591.6531634 µ | 1,222,309.9837961 µ | 1,426,028.3144288 µ | 1,629,746.6450615 µ | 1,833,464.9756942 µ | 2,037,183.3063269 µ | 2,240,901.6369595 µ | 2,444,619.9675922 µ | 2,648,338.2982249 µ | 2,852,056.6288576 µ | 3,055,774.9594903 µ | 3,259,493.290123 µ | 3,463,211.6207557 µ | 3,666,929.9513883 µ | 3,870,648.282021 µ | 4,074,366.6126537 µ | 4,278,084.9432864 µ | 4,481,803.2739191 µ | 4,685,521.6045518 µ | 4,889,239.9351845 µ | 5,092,958.2658172 µ | 5,296,676.5964498 µ | 5,500,394.9270825 µ | 5,704,113.2577152 µ | 5,907,831.5883479 µ | 6,111,549.9189806 µ | 6,315,268.2496133 µ | 6,518,986.580246 µ | 6,722,704.9108786 µ | 6,926,423.2415113 µ | 7,130,141.572144 µ | 7,333,859.9027767 µ | 7,537,578.2334094 µ | 7,741,296.5640421 µ | 7,945,014.8946748 µ | 8,148,733.2253074 µ | 8,352,451.5559401 µ | 8,556,169.8865728 µ | 8,759,888.2172055 µ | 8,963,606.5478382 µ | 9,167,324.8784709 µ | 9,371,043.2091036 µ | 9,574,761.5397362 µ | 9,778,479.8703689 µ | 9,982,198.2010016 µ | 10,185,916.531634 µ | 10,389,634.862267 µ | 10,593,353.1929 µ | 10,797,071.523532 µ | 11,000,789.854165 µ | 11,204,508.184798 µ | 11,408,226.51543 µ | 11,611,944.846063 µ | 11,815,663.176696 µ | 12,019,381.507328 µ | 12,223,099.837961 µ | 12,426,818.168594 µ | 12,630,536.499227 µ | 12,834,254.829859 µ | 13,037,973.160492 µ | 13,241,691.491125 µ | 13,445,409.821757 µ | 13,649,128.15239 µ | 13,852,846.483023 µ | 14,056,564.813655 µ | 14,260,283.144288 µ | 14,464,001.474921 µ | 14,667,719.805553 µ | 14,871,438.136186 µ | 15,075,156.466819 µ | 15,278,874.797451 µ | 15,482,593.128084 µ | 15,686,311.458717 µ | 15,890,029.78935 µ | 16,093,748.119982 µ | 16,297,466.450615 µ | 16,501,184.781248 µ | 16,704,903.11188 µ | 16,908,621.442513 µ | 17,112,339.773146 µ | 17,316,058.103778 µ | 17,519,776.434411 µ | 17,723,494.765044 µ | 17,927,213.095676 µ | 18,130,931.426309 µ | 18,334,649.756942 µ | 18,538,368.087574 µ | 18,742,086.418207 µ | 18,945,804.74884 µ | 19,149,523.079472 µ | 19,353,241.410105 µ | 19,556,959.740738 µ | 19,760,678.071371 µ | 19,964,396.402003 µ | 20,168,114.732636 µ | 20,371,833.063269 µ |
1/2 circle or half circle is equal to 360°/2 = 180°. Plural name is helf circles.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
helf circle | 1/2 circle | ≡ 180 ° | = 3.1415926 rad | Metric system SI |
helf circles | angular mils | helf circles | angular mils |
---|---|---|---|
1 | ≈ 203718.33063269 | 6 | ≈ 1222309.9837961 |
2 | ≈ 407436.66126537 | 7 | ≈ 1426028.3144288 |
3 | ≈ 611154.99189806 | 8 | ≈ 1629746.6450615 |
4 | ≈ 814873.32253074 | 9 | ≈ 1833464.9756942 |
5 | ≈ 1018591.6531634 | 10 | ≈ 2037183.3063269 |
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 | helf circles | angular mils | helf circles |
---|---|---|---|
1 | ≈ 4.9087384375E-6 | 6 | ≈ 2.9452430625E-5 |
2 | ≈ 9.817476875E-6 | 7 | ≈ 3.43611690625E-5 |
3 | ≈ 1.47262153125E-5 | 8 | ≈ 3.92699075E-5 |
4 | ≈ 1.963495375E-5 | 9 | ≈ 4.41786459375E-5 |
5 | ≈ 2.45436921875E-5 | 10 | ≈ 4.9087384375E-5 |
helf circles | angular mils |
---|---|
1 | ≈ 203,718.3306327 |
4.9087384375 × 10-6 | ≈ 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 …) |