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  2. Pica (typography) - Wikipedia

    en.wikipedia.org/wiki/Pica_(typography)

    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).

  3. Point (typography) - Wikipedia

    en.wikipedia.org/wiki/Point_(typography)

    Japanese [24] and German [9] [16] [18] standardization bodies instead opted for a metric typographic base measure of exactly 1 ⁄ 4 mm or 0.250 mm, which is sometimes referred to as the quart in Japan. The symbol Q is used in Japanese after the initial letter of quarter millimeter. Due to demand by Japanese typesetters, CSS adopted Q in 2015 ...

  4. Dots per inch - Wikipedia

    en.wikipedia.org/wiki/Dots_per_inch

    Actual size is approximately 1 ⁄ 4 by 1 ⁄ 4 inch (6 by 6 mm). Individual coloured droplets of ink are visible; this sample is about 150 DPI. 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 ...

  5. You're Probably Measuring Things Wrong - AOL

    www.aol.com/youre-probably-measuring-things...

    Every tape measure is different. If none of your measurements are precise, you've come to the right place. Learn how to use a tape measure in feet and inches.

  6. Adobe Illustrator - Wikipedia

    en.wikipedia.org/wiki/Adobe_Illustrator

    The Adobe Illustrator Artwork format is the native Illustrator file format. It is a proprietary file format developed by Adobe Systems for representing single-page vector-based drawings in either the EPS or PDF formats. The .ai filename extension is used by Adobe Illustrator. The AI file format was originally a native format called PGF.

  7. Dimensional metrology - Wikipedia

    en.wikipedia.org/wiki/Dimensional_metrology

    Measurements are often expressed as a size relative to a theoretically perfect part that has its geometry defined in a print or computer model. A print is a blueprint illustrating the defined geometry of a part and its features. Each feature can have a size, a distance from other features, and an allowed tolerance set for each element.

  8. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales.The microwave is between 1 meter to 1 millimeter.. The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length.

  9. Dot planimeter - Wikipedia

    en.wikipedia.org/wiki/Dot_planimeter

    When counting dots near the boundary of the shape as 1/2, there are 69 interior dots and 20 boundary dots for an estimated area of 79, close to the actual area of 25 π ≈ 78.54. A dot planimeter is a device used in planimetrics for estimating the area of a shape, consisting of a transparent sheet containing a square grid of dots. To estimate ...