referenssikartan
A referenssikartta, often translated as a reference map or key map, is a cartographic tool used to show the spatial relationships between different map sheets or areas. Its primary purpose is to help users locate a specific map within a larger collection or to understand the geographical coverage of a series of maps. Typically, a referenssikartta displays the boundaries of individual map sheets, often with their corresponding sheet numbers or names. It may also indicate the scale and projection used for the maps it references.
These maps are essential for navigating large-scale mapping projects, atlases, or geographical databases. By presenting an