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32-point compass rose. The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography.A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each separated by 90 degrees, and secondarily divided by four ordinal (intercardinal) directions—northeast, southeast, southwest, and ...
A compass rose or compass star, sometimes called a wind rose or rose of the winds, is a polar diagram displaying the orientation of the cardinal directions (north, east, south, and west) and their intermediate points. It is used on compasses (including magnetic ones), maps (such as compass rose networks), or monuments.
A compass rose showing the four cardinal directions, the four intercardinal directions, and eight more divisions.. The four cardinal directions, or cardinal points, are the four main compass directions: north, south, east, and west, commonly denoted by their initials N, S, E, and W respectively.
Map of the United States with state and territory names 1681 map of North America Antebellum map of the United States, published by Sidney E. Morse in An Atlas of the United States (1823), showing the recent acquisition of Missouri and Louisiana, and the remnant of the Northwest Territory after the establishment of Ohio, Indiana and Missouri
The Mercator projection in normal aspect maps trajectories of constant bearing (called rhumb lines or loxodromes) on a sphere to straight lines on the map, and is thus uniquely suited to marine navigation: courses and bearings are measured using a compass rose or protractor, and the corresponding directions are easily transferred from point to ...
The principal lines are oriented to the magnetic north pole. [12] Thus the grid lines varied slightly for charts produced in different eras, due to the natural changes of the Earth's magnetic declination. [12] These lines are similar to the compass rose displayed on later maps and charts. "All portolan charts have wind roses, though not ...
A modern military compass, with included sight device for aligning. A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with magnetic north.
A modern nautical compass rose. The outer circle (true rose) is aligned with true north; the inner circle (magnetic rose) with magnetic north. Inside the magnetic rose there is also an older 32-point graduation. Date: 15 August 2007: Source: Redrawn in Inkscape; based on a public domain file created by NOAA. Author: Mysid