diameter across flats

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• Coins of the Australian dollar — were introduced on 14 February 1966, although they did not at that time include a one dollar coin. The dollar was equivalent in value to 10 shillings in the former currency (half of a pound). Contents 1 Regular coinage 2 Commemorative coins 3… …   Wikipedia

• sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

• Maritime history of California — History of California This article is part of a series Timeline …   Wikipedia

• gastropod — /gas treuh pod /, n. 1. any mollusk of the class Gastropoda, comprising the snails, whelks, slugs, etc. adj. 2. Also, gastropodous /ga strop euh deuhs/. belonging or pertaining to the gastropods. [1820 30; < NL Gast(e)ropoda a class of mollusks.… …   Universalium

• Upminster Windmill — (TQ 557 868 (Coord|51.9525|0.3410|display=inline|format=dms) is a Grade II* listedcite web|url=http://www.imagesofengland.org.uk/search/details.aspx?pid=1 id=201646 |title=UPMINSTER WINDMILL, ST MARYS LANE, UPMINSTER, HAVERING, GREATER LONDON… …   Wikipedia

• Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …   Wikipedia

• Fly system — Fly loft of the Theater Bielefeld in Germany A fly system, flying system or theatrical rigging system, is a system of lines (e.g. ropes), blocks (pulleys), counterweights and related devices within a theatre that enable a stage crew to quickly,… …   Wikipedia

• hand tool — any tool or implement designed for manual operation. * * * Introduction  any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …   Universalium

• Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …   Wikipedia

• Outwood Windmill — is a Grade I listed[1] post mill in Outwood, Surrey. Built in 1665 by Thomas Budgen, a miller from Nutfield in Surrey, it is Britain s oldest working windmill.[2] The windmill was one of a pair, as there was a smock mill built alongside in 1797.… …   Wikipedia

• North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… …   Universalium