Elevations, or altitudes, irrespective of longitude and latitude, use spot heights for individual points like summits, and contour-lines to trace levels across the landscape at particular elevations. The heights may be in feet or (more universally now) metres.
scales
The two elevation keys that are used on some maps using two measurements are kilometers [km] and miles [m]
feet, and meters
The two measurements that show land elevation on a map are feet above sea level and meters above sea level. The map itself has contour lines in order to distinguish elevations.
feet and inches
inches and centimeters
Contour lines and spot elevations are two common elevation measurements found on a map key. A contour line represents a specific elevation, while spot elevations indicate exact elevation at a particular point on the map.
The two measurements typically used to show elevation on a map key are contour lines and spot elevations. Contour lines are lines connecting points of equal elevation, while spot elevations provide specific elevation values at certain points on the map.
The two measurements that show land elevation on a map are feet above sea level and meters above sea level. The map itself has contour lines in order to distinguish elevations.
Sea level and below sea level
elevation maps are maps that show you the height of land above sea level
Most people are probably familiar with contour lines found on topographic maps, which show elevation. Contour lines can also show weather and climate data, such as temperatures and humidity. Less common, bathymetry (the depth of water bodies) can also be shown using contours.