Uncover the epic adventure behind the Great Trigonometrical Survey with ‘India in Triangles’ from The Bookish Owl. Follow intrepid surveyors as they brave treacherous landscapes, wild animals, and extreme weather to meticulously map India with unparalleled accuracy. This engaging book, perfect for readers aged 11 and up, reveals the ingenious scientific methods used, including triangulation, to measure the subcontinent and even calculate the height of the world’s tallest mountains. Discover a captivating true story filled with math, science, resilience, and incredible discoveries. An essential read for young explorers and history enthusiasts interested in the mapping of India and the measurement of the Himalayas.