horizontal check
41Dam — This article is about structures for water impoundment. For other uses, see Dam (disambiguation). Hoover Dam, a concrete arch gravity dam in Black Canyon of the Colorado River. Lake Mead in the background is impounded by the dam …
42O'Hare International Airport — ORD redirects here. For other uses, see Ord (disambiguation). Ohare redirects here. For people with that name, see O Hare (surname). Chicago O Hare International Airport USGS aerial image, 2011 …
43US Airways — IATA US ICAO AWE Callsign CACTUS …
44Spain — /spayn/, n. a kingdom in SW Europe. Including the Balearic and Canary islands, 39,244,195; 194,988 sq. mi. (505,019 sq. km). Cap.: Madrid. Spanish, España. * * * Spain Introduction Spain Background: Spain s powerful world empire of the 16th and… …
45Theodolite — A theodolite (IPA en|θiːˈɒdəlаɪt) is an instrument for measuring both horizontal and vertical angles, as used in triangulation networks. It is a key tool in surveying and engineering work, particularly on inaccessible grounds, but theodolites… …
46Oscilloscope — This article is about current oscilloscopes, providing general information. For history of oscilloscopes, see Oscilloscope history. For detailed information about various types of oscilloscopes, see Oscilloscope types. Illustration showing the… …
47Checkwriter — Contents 1 check writer The term defined 2 check writer The physical machine 3 CheckWriter Brand Software 4 See also …
48Rules of chess — The rules of chess (also known as the laws of chess) are rules governing the play of the game of chess. While the exact origins of chess are unclear, modern rules first took form during the Middle Ages. The rules c …
49Dagger (typography) — † redirects here. For the album by Justice, see † (album). Double dagger redirects here. For the punk rock band, see Double Dagger. †‡ Dagger …
50List of chess terms — This page explains commonly used terms in chess in alphabetical order. Some of these have their own pages, like fork and pin. For a list of unorthodox chess pieces, see fairy chess piece; for a list of terms specific to chess problems, see chess… …
