Karttalehtiä

Karttalehtiä is a Finnish term that translates to "map sheets" or "map leaves." It commonly refers to individual sheets or sections of a larger map that are published separately. These map sheets are typically part of a series, covering a specific geographic area in detail. For example, a national survey might produce a series of map sheets, each depicting a county or a region.

The purpose of using map sheets is to divide a large area into manageable and more detailed portions. This allows cartographers to present information at a scale that would be impractical or impossible to show on a single, unified map of the entire region. Each sheet usually has its own title or designation indicating the area it covers, along with a unique reference number or code.

Karttalehtiä are essential for various applications, including geographical surveys, land management, navigation, and historical studies. They enable users to focus on specific locations without being overwhelmed by the vastness of a larger map. When using multiple map sheets together, a legend or index map is often provided to help users understand how the individual sheets fit together to form a complete picture of the surveyed territory. The production and organization of map sheets follow standardized cartographic practices to ensure consistency and usability.