Where are latitude scales usually found on maps or charts?

Latitude scales are typically found along the horizontal margins of maps or charts because latitude measures the distance north or south of the equator. This measurement is represented in degrees, with the equator at 0 degrees latitude and values increasing to 90 degrees at the poles. By placing the latitude scale along the horizontal margins, users can easily reference their position in relation to the equator while using the map.

In contrast, longitude is measured east or west of the Prime Meridian and is usually represented along the vertical margins. The placement of these scales helps users to quickly determine their geographical coordinates, which is especially crucial in navigation and maritime operations. The other locations mentioned, such as the center of the map or at the edges, do not provide the clarity or immediate reference that horizontal margins do.