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