The Description and Use of the Universal Trigonometrical Octant is a book written by George Adams in 1753. The book is a comprehensive guide to the use of the Universal Trigonometrical Octant, a mathematical instrument used for measuring angles and distances. The book begins with an introduction to the Octant and its history, followed by a detailed description of its construction and components. Adams then goes on to explain how to use the Octant for various applications, such as measuring the altitude of celestial bodies, determining the latitude and longitude of a location, and calculating the distance between two points.The book includes numerous diagrams and illustrations to aid in understanding the concepts and techniques discussed. Adams also provides tables of logarithms and other mathematical formulas that are necessary for using the Octant effectively.Overall, The Description and Use of the Universal Trigonometrical Octant is a valuable resource for anyone interested in the history of mathematics and navigation, as well as for those who still use the Octant or similar instruments for scientific or navigational purposes.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.