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drafter : ウィキペディア英語版
drafter

A drafter, draughtsman (British English) or draftsman (American English) is a person who prepares technical drawings and plans under the direction of an architect or engineer.
== Overview ==
In the past, drafters sat at drawing boards and used pencils, pens, compasses, protractors, triangles, and other drafting devices to prepare a drawing by hand. From the 1980s through 1990s it seemed like board drawings were going out of style as the newly developed computer-aided design (CAD) system was released and was able to produce technical drawings at a faster pace. But, board drafting still remains the base of the CAD system. Consequently, some drafters may be referred to as CAD operators.〔Bureau of Labor Statistics (2008) ''(''Occupational Outlook Handbook, 2008–09 Edition: Drafters )'' dated: 18 December 2007. accessed: 24 September 2008.〕
With CAD systems, drafters can create and store drawings electronically so that they can be viewed, printed, or programmed directly into automated manufacturing systems. CAD systems also permit drafters to quickly prepare variations of a design. Although drafters use CAD extensively, it is only a tool. Drafters still need knowledge of traditional drafting techniques, in addition to CAD skills. Despite the near global use of CAD systems, manual drafting and sketching are used in certain applications.〔
Drafters’ drawings provide visual guidelines and show how to construct a product or structure. Drawings include technical details and specify dimensions, materials, and procedures. Drafters fill in technical details using drawings, rough sketches, specifications, and calculations made by engineers, surveyors, architects, or scientists. For example, drafters use their knowledge of standardized building techniques to draw in the details of a structure. Some use their understanding of engineering and manufacturing theory and standards to draw the parts of a machine; they determine design elements, such as the numbers and kinds of fasteners needed to assemble the machine. Drafters use technical handbooks, tables, calculators, and computers to complete their work.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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