| twelfth circle | 1 1/12 circle | 2 1/12 circle | 3 1/12 circle | 4 1/12 circle | 5 1/12 circle | 6 1/12 circle | 7 1/12 circle | 8 1/12 circle | 9 1/12 circle | 10 1/12 circle | 11 1/12 circle | 12 1/12 circle | 13 1/12 circle | 14 1/12 circle | 15 1/12 circle | 16 1/12 circle | 17 1/12 circle | 18 1/12 circle | 19 1/12 circle | 20 1/12 circle | 21 1/12 circle | 22 1/12 circle | 23 1/12 circle | 24 1/12 circle | 25 1/12 circle | 26 1/12 circle | 27 1/12 circle | 28 1/12 circle | 29 1/12 circle | 30 1/12 circle | 31 1/12 circle | 32 1/12 circle | 33 1/12 circle | 34 1/12 circle | 35 1/12 circle | 36 1/12 circle | 37 1/12 circle | 38 1/12 circle | 39 1/12 circle | 40 1/12 circle | 41 1/12 circle | 42 1/12 circle | 43 1/12 circle | 44 1/12 circle | 45 1/12 circle | 46 1/12 circle | 47 1/12 circle | 48 1/12 circle | 49 1/12 circle | 50 1/12 circle | 51 1/12 circle | 52 1/12 circle | 53 1/12 circle | 54 1/12 circle | 55 1/12 circle | 56 1/12 circle | 57 1/12 circle | 58 1/12 circle | 59 1/12 circle | 60 1/12 circle | 61 1/12 circle | 62 1/12 circle | 63 1/12 circle | 64 1/12 circle | 65 1/12 circle | 66 1/12 circle | 67 1/12 circle | 68 1/12 circle | 69 1/12 circle | 70 1/12 circle | 71 1/12 circle | 72 1/12 circle | 73 1/12 circle | 74 1/12 circle | 75 1/12 circle | 76 1/12 circle | 77 1/12 circle | 78 1/12 circle | 79 1/12 circle | 80 1/12 circle | 81 1/12 circle | 82 1/12 circle | 83 1/12 circle | 84 1/12 circle | 85 1/12 circle | 86 1/12 circle | 87 1/12 circle | 88 1/12 circle | 89 1/12 circle | 90 1/12 circle | 91 1/12 circle | 92 1/12 circle | 93 1/12 circle | 94 1/12 circle | 95 1/12 circle | 96 1/12 circle | 97 1/12 circle | 98 1/12 circle | 99 1/12 circle | 100 1/12 circle |
| sextant | 0.5 " | 1 " | 1.5 " | 2 " | 2.5 " | 3 " | 3.5 " | 4 " | 4.5 " | 5 " | 5.5 " | 6 " | 6.5 " | 7 " | 7.5 " | 8 " | 8.5 " | 9 " | 9.5 " | 10 " | 10.5 " | 11 " | 11.5 " | 12 " | 12.5 " | 13 " | 13.5 " | 14 " | 14.5 " | 15 " | 15.5 " | 16 " | 16.5 " | 17 " | 17.5 " | 18 " | 18.5 " | 19 " | 19.5 " | 20 " | 20.5 " | 21 " | 21.5 " | 22 " | 22.5 " | 23 " | 23.5 " | 24 " | 24.5 " | 25 " | 25.5 " | 26 " | 26.5 " | 27 " | 27.5 " | 28 " | 28.5 " | 29 " | 29.5 " | 30 " | 30.5 " | 31 " | 31.5 " | 32 " | 32.5 " | 33 " | 33.5 " | 34 " | 34.5 " | 35 " | 35.5 " | 36 " | 36.5 " | 37 " | 37.5 " | 38 " | 38.5 " | 39 " | 39.5 " | 40 " | 40.5 " | 41 " | 41.5 " | 42 " | 42.5 " | 43 " | 43.5 " | 44 " | 44.5 " | 45 " | 45.5 " | 46 " | 46.5 " | 47 " | 47.5 " | 48 " | 48.5 " | 49 " | 49.5 " | 50 " |
1/12 circle or twelfth circle is equal to 360°/12 = 30°. Plural name is twelfth circles.
| 1 twelfth circles ≈ 0.5 sextants | 6 twelfth circles ≈ 3 sextants |
| 2 twelfth circles ≈ 1 sextants | 7 twelfth circles ≈ 3.5 sextants |
| 3 twelfth circles ≈ 1.5 sextants | 8 twelfth circles ≈ 4 sextants |
| 4 twelfth circles ≈ 2 sextants | 9 twelfth circles ≈ 4.5 sextants |
| 5 twelfth circles ≈ 2.5 sextants | 10 twelfth circles ≈ 5 sextants |
sextant is the unit of plane angle, equals to 60°.
| 1 sextants ≈ 2 twelfth circles | 6 sextants ≈ 12 twelfth circles |
| 2 sextants ≈ 4 twelfth circles | 7 sextants ≈ 14 twelfth circles |
| 3 sextants ≈ 6 twelfth circles | 8 sextants ≈ 16 twelfth circles |
| 4 sextants ≈ 8 twelfth circles | 9 sextants ≈ 18 twelfth circles |
| 5 sextants ≈ 10 twelfth circles | 10 sextants ≈ 20 twelfth circles |
| 1 twelfth circles ≈ 0.5 sextants |
| 1 sextants ≈ 2 twelfth circles |