| 11. | The six bars in each octant half overlapped to avoid having any uninstrumented regions.
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| 12. | In 1829 Francis Ronalds invented a octant.
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| 13. | There exist a variety of psychological tests designed to measure these eight interpersonal circumplex octants.
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| 14. | It was not considered better than the Hadley octant and was less convenient to use.
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| 15. | The Cahill Keyes projection has 8 octants.
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| 16. | This was to be the last major power to be made part of the Alpha Octant.
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| 17. | An octant could be half the size of a Davis quadrant with no increase in error.
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| 18. | Octants were produced in large numbers.
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| 19. | Again, by reflecting these points in all the octants, we get the full circle.
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| 20. | With the development of the sextant, the octant became something of a second class instrument.
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