Brtish mathematician who invented the octant, an early on version from the sextant navigational tool. He also was known to make Gregorian telescopes with accurately formed mirrors. He became a member of the Royal Culture in 1717 and ascended to its management part 11 years later on. As well as two of his brothers he created a tool to greatly help dispatch navigators determine their placement at sea and prevent harmful waters. He was raised within an aristocratic family members; his father offered as high sheriff of the spot. He built a number of the first telescopes from Isaac Newton’s styles.