"Old-Time Nautical Instruments" by John Robinson is a historical account published in the early 20th century, specifically in 1921. The book explores the various navigational tools used by ship captains from the time of the early explorers, such as Columbus and the pilgrims aboard the Mayflower, through to the post-Revolutionary War era leading up to the advent of steamships. It delves into the evolution of these instruments and their significance in maritime history. In this book, Robinson examines a range of nautical instruments, detailing their designs, uses, and historical contexts. Readers learn about essential devices such as the astrolabe, cross-staff, Davis quadrant, and the sextant, each playing a crucial role in navigation and ship operations during earlier centuries. Through historical anecdotes and references to instruments found in museum collections, the author illustrates the challenges faced by sailors navigating uncharted waters with primitive tools. The work serves as both an informative guide and a call to scholars and enthusiasts to explore the rich history of maritime navigation further. (This is an automatically generated summary.)