mathematical knowledge. The opening of "Karte und Kroki" introduces the book's structure and purpose, emphasizing its role within a broader mathematical-physical library. It begins with a foreword where Wolff explains his motivations for writing the book, particularly his experience as a surveying officer and the need for comprehensive education in cartography in schools. He outlines that the first part of the book will cover the necessary work for creating topographic maps, while the second part will delve into the methods for producing sketches (or “krokis”). The text is designed to be concise and clear, ensuring that readers can easily understand the methods needed for accurate measurement of distances, angles, and elevation changes in various terrains. (This is an automatically generated summary.)