perforation spacing
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Meccano — For the Spanish musical group, see Mecano. Meccano Type Construction set Inventor Frank Hornby … Wikipedia
Postage stamps and postal history of Denmark — This article is an overview of the postage stamps and postal history of Denmark. Early postal history Denmark s postal history begins with an ordinance of 24 December 1624 by King Christian IV, establishing a national postal service . This… … Wikipedia
Landslide mitigation — Landslides can be triggered by many often concomitant causes. In addition to shallow erosion or reduction of shear strength caused by seasonal rainfall, causes triggered by anthropic activities such as adding excessive weight above the slope,… … Wikipedia
List of oil field acronyms — Contents 1 # 2 A 3 B 4 C … Wikipedia
printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… … Universalium
Postage stamp separation — For postage stamps, separation is the means by which individual stamps are made easily detachable from each other. Methods of separation include: # perforation cutting rows and columns of small holes # rouletting small horizontal and vertical… … Wikipedia
Player piano — The player piano is a self playing piano, containing a pneumatic mechanism that plays on the piano action pre programmed music via perforated paper rolls. The rise of the player piano grew with the rise of the mass produced piano in the house and … Wikipedia
Continuous stationery — Listing of a large computer program on continuous form paper, bound in a printout binder … Wikipedia
Hole punch — A hole punch (known also as a hole puncher, paper puncher, holing pincer, or rarely perforator) is a common office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder. History … Wikipedia
Shaped charge — Sectioned high explosive anti tank round with the inner shaped charge visible … Wikipedia
Solar thermal energy — Solar thermal system for water heating in Santorini, Greece … Wikipedia
