| 41. | Spencer, Browning & Rust manufactured a variety of navigational instruments, including octants, sextants, telescopes, and compasses.
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| 42. | Backstaves were no longer allowed on board Dutch East India Company vessels as per 1731, with octants not permitted until 1748.
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| 43. | Various design elements of Smith's instrument made it inferior to Hadley's octant and it was not used significantly.
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| 44. | What is remarkable about the octant is the number of persons who independently invented the device in a short period of time.
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| 45. | There are existing octants that have had the phrase " " ?Londres " " added to the company name.
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| 46. | A third item in the collection is an octant made of brass, ebony, and ivory, probably manufactured about 1800.
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| 47. | All nations in the Alpha Octant realize that nothing has been resolved and that another major war is just a matter of time.
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| 48. | These were widely used by others and the " SBR " initials could be found on octants from many other manufacturers.
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| 49. | The octant continued to be produced well into the 19th century, though it was generally a less accurate and less expensive instrument.
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| 50. | The outer extremes of octants V, VI, VII, as well as all of octant VIII were devoted to contemporaries of Riccioli.
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