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Essentially, they are a specially marked-out ruler which matches the scale of the map in use. The scales are laid out in reverse, such that by lining up the numbers given in the grid reference with the gridlines for the square in question, the corner of the Romer lies on the location the grid reference of which is being read.
3/8 or 3 ⁄ 8 may refer to: 3rd Battalion, 8th Marines; the calendar date March 8 (United States) the calendar date August 3 (Gregorian calendar) the fraction, three eighths or 0.375 in decimal; a time signature; 3/8, a 2007 album by Kay Tse
The rule of thirds is a rule of thumb for composing visual art such as designs, films, paintings, and photographs. [3] The guideline proposes that an image should be imagined as divided into nine equal parts by two equally spaced horizontal lines and two equally spaced vertical lines, and that important compositional elements should be placed ...
A scale ruler is a tool for measuring lengths and transferring measurements at a fixed ratio of length; two common examples are an architect's scale and engineer's scale. In scientific and engineering terminology, a device to measure linear distance and create proportional linear measurements is called a scale.
A type of pictorial maps are maps that use anthropomorphic images. Anthropomorphic maps date back to when Sebastian Münster used a queen to depict Europe in 1570. [10] The map, The Man of Commerce, by Augustus F. McKay is the earliest anthropomorphic map known of in the United States, created in 1889. [10]
A ruler with two linear scales: the metric and imperial.It includes shorter minor graduations and longer major graduations. A graduation is a marking used to indicate points on a visual scale, which can be present on a container, a measuring device, or the axes of a line plot, usually one of many along a line or curve, each in the form of short line segments perpendicular to the line or curve.
In meteorology, an okta is a unit of measurement used to describe the amount of cloud cover at any given location such as a weather station. Sky conditions are estimated in terms of how many eighths of the sky are covered in cloud , ranging from 0 oktas (completely clear sky) through to 8 oktas (completely overcast ).
Image:BlankMap-World.png – World map, Robinson projection centered on the meridian circa 11°15' to east from the Greenwich Prime Meridian. Microstates and island nations are generally represented by single or few pixels approximate to the capital; all territories indicated in the UN listing of territories and regions are exhibited.