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The desktop publishing point (DTP point) or PostScript point is defined as 1 ⁄ 72 or 0.013 8 of the international inch, making it equivalent to 25.4 ⁄ 72 mm = 0.352 7 mm. Twelve points make up a pica, and six picas make an inch.
Typographic unit. A ruler showing 4 scales (from the top down): Inches, Points, Picas, and Agates. Diagram of font metrics showing where letters and symbols would be placed relative to each other. The letters would change size according to the font type, typographic unit and dimension used. Typographic units are the units of measurement used in ...
The pica is a typographic unit of measure corresponding to approximately 1 ⁄ 6 of an inch, or from 1 ⁄ 68 to 1 ⁄ 73 of a foot. One pica is further divided into 12 points. In printing, three pica measures are used: The French pica of 12 Didot points (also called cicero) generally is: 12 × 0.376 = 4.512 mm (0.1776 in).
Dots per inch ( DPI, or dpi [1]) is a measure of spatial printing, video or image scanner dot density, in particular the number of individual dots that can be placed in a line within the span of 1 inch (2.54 cm). Similarly, dots per centimetre ( d/cm or dpcm) refers to the number of individual dots that can be placed within a line of 1 ...
Metric ( SI) units. 25.4 mm. A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement. It is equal to 1 36 yard or 1 12 of a foot. Derived from the Roman uncia ("twelfth"), the word inch is also sometimes used to translate ...
Table of length units. 1⁄12 of a ligne. This unit is usually called the Truchet point in English. Prior to the French Revolution the Fournier point was also in use. It was 1⁄6 of a ligne or 1⁄864 of the smaller French foot. 1⁄12 of a pouce. This corresponds to the line, a traditional English unit. 1⁄12 of a pied du roi.
Pitch (typewriter) Pitch is the number of ( monospaced) letters, numbers and spaces in one inch (25.4 mm) of running text, that is, characters per inch (abbreviated cpi ), measured horizontally. [1] [2] The pitch was most often used as a measurement of the size of typewriter fonts as well as those of impact printers used with computers.
Twips are screen-independent units to ensure that the proportion of screen elements are the same on all display systems. A twip is defined as being 1440 of an inch (approximately 17.64 μm). A pixel is a screen-dependent unit, standing for 'picture element'. A pixel is a dot that represents the smallest graphical measurement on a screen.