The Description, Nature and General Use, of the Sector and Plain-Scale: Briefly and Painly [!] Laid Down. As Also a Short Account of the Uses of the Lines of Numbers, Artificial Sines and Tangents

This fascinating book provides a detailed introduction to the sector and plain-scale, important tools for navigation and surveying. It covers the basic principles and techniques of using these tools, with clear and concise explanations and practical examples. The book also includes a brief history of these instruments, and explores their uses in a range of fields, from astronomy to engineering. Whether you're a history buff, a mathematician, or just curious about the world around you, this book is a must-read.

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