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  2. Units of paper quantity - Wikipedia

    en.wikipedia.org/wiki/Units_of_paper_quantity

    A quire of paper is a measure of paper quantity. The usual meaning is 25 sheets of the same size and quality: 1 ⁄ 20 of a ream of 500 sheets. Quires of 25 sheets are often used for machine-made paper, while quires of 24 sheets are often used for handmade or specialised paper of 480-sheet reams.

  3. Paper size - Wikipedia

    en.wikipedia.org/wiki/Paper_size

    It is primarily used for envelopes. The area of C series sheets is the geometric mean of the areas of the A and B series sheets of the same number; for instance, the area of a C4 sheet is the geometric mean of the areas of an A4 sheet and a B4 sheet. This means that C4 is slightly larger than A4, and slightly smaller than B4.

  4. ISO 216 - Wikipedia

    en.wikipedia.org/wiki/ISO_216

    The standard defines the "A", "B" and "C" series of paper sizes, which includes the A4, the most commonly available paper size worldwide. Two supplementary standards, ISO 217 and ISO 269 , define related paper sizes; the ISO 269 " C " series is commonly listed alongside the A and B sizes.

  5. Douglas A-4 Skyhawk - Wikipedia

    en.wikipedia.org/wiki/Douglas_A-4_Skyhawk

    The Douglas A-4 Skyhawk is a single-seat subsonic carrier-capable light attack aircraft designed and produced by the American aerospace manufacturer Douglas Aircraft Company, and later, McDonnell Douglas.

  6. Sidu River Bridge - Wikipedia

    en.wikipedia.org/wiki/Sidu_River_Bridge

    The Sidu River Bridge (Chinese: 四渡河特大桥; pinyin: Sìdù Hé Tèdà Qiáo) is a 1,222 m-long (4,009 ft) suspension bridge crossing the valley of the Sidu River near Yesanguan in Badong County of the Hubei Province of the People's Republic of China. The bridge was designed by CCSHCC Second Highway Consultants Company, Limited. and ...

  7. Paper density - Wikipedia

    en.wikipedia.org/wiki/Paper_density

    Weighing scale to determine paper weight. Paper density is a paper product's mass per unit volume.The density can be calculated by dividing the grammage of paper (in grams per square metre or "gsm") by its caliper (usually in micrometres, occasionally in mils).

  8. Sidu - Wikipedia

    en.wikipedia.org/wiki/Sidu

    Sidu, a 2016–2022 Sri Lankan drama series This page was last edited on 30 September 2022, at 17:10 (UTC). Text is available under the Creative Commons ...

  9. Audi RS 4 - Wikipedia

    en.wikipedia.org/wiki/Audi_RS_4

    The Audi RS 4 is the high-performance variant of the Audi A4 range produced by Audi Sport GmbH for AUDI AG, a division of the Volkswagen Group. It sits above the Audi S4 as the fastest, most sports-focused car based on the A4's "B" automobile platform. The RS 4 was reintroduced in 2012, based on the A4 Avant instead of the sedan as did the ...