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