Circle of latitude the Earth onto a plane. On an equirectangular projection, centered on the equator, the circles of latitude are horizontal, parallel, and equally spaced. On other cylindrical and pseudocylindrical projections, the circles of latitude are horizontal and parallel, but may be spaced unevenly to give the map useful characteristics. For instance, on a Mercator projection the circles of latitude are more widely spaced near the poles to preserve local scales and shapes, while on a Gall–Peters projection the circles of latitude are spaced more closely near the poles so that comparisons of area will be accurate. On most non-cylindrical and non-pseudocylindrical
Dell Latitude the Latitude line (due to switching to a USB C/Thunderbolt dock system, rather than the e-Port analog pin-system docks), and the models just go by number now, e.g.: Latitude 5480, 5570. The second number in the model (As in, 5470 or 7280) indicates the size of the screen in the laptop. The current Dell Latitude lineup is as follows: Latitude 3xxx series. Budget models intended for education or home office environments, available in 13.3"/14"/15.6" trims. Latitude 5xxx series. Mainstream line, available in 11.1"/12.5"/13.3"/14"/15.6" trims. Latitude 7xxx series. Premium "ultrabooks", available in 12.5"/13.3"/14" trims only. Latitude computers are also differentiated in