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The title block (T/B, TB) is an area of the drawing that conveys header-type information about the drawing, such as: Drawing title (hence the name "title block") Drawing number; Part number(s) Name of the design activity (corporation, government agency, etc.) Identifying code of the design activity (such as a CAGE code) Address of the design ...
ISO 7200, titled Technical product documentation - Data fields in title blocks and document headers, is an international technical standard defined by ISO which describes title block formats to be used in technical drawings.
In some cases stability is impossible; for example, P and F are unavoidably top-heavy. In other cases the stability and grace of the letters may be maintained either by drawing the lower parts of the letters like B , E etc. wider than the upper parts, or by drawing the horizontal line at the center of these letters just above their geometric axis.
The basic drafting procedure is to place a piece of paper (or other material) on a smooth surface with right-angle corners and straight sides—typically a drawing board. A sliding straightedge known as a T-square is then placed on one of the sides, allowing it to be slid across the side of the table, and over the surface of the paper.
ISO 216 paper sizes, e.g. the A4 paper size; ISO 406:1987 Technical drawings — Tolerancing of linear and angular dimensions; ISO 1660:2017 Geometrical product specifications (GPS) — Geometrical tolerancing — Profile tolerancing; ISO 2203:1973 Technical drawings — Conventional representation of gears
Smaller drawing boards are produced for table-top use. In the 18th and 19th centuries, drawing paper was dampened and then its edges glued to the drawing board. After drying the paper would be flat and smooth. The completed drawing was then cut free. [3]: 1-2 Paper could also be secured to the drawing board with drawing pins [4] or even C-clamps.
Architectural drawing, Germany, 1902 Architectural drawing, Canada, 1936. The blueprint process is based on a photosensitive ferric compound. The best known is a process using ammonium ferric citrate and potassium ferricyanide. [6] [7] The paper is impregnated with a solution of ammonium ferric citrate and dried. When the paper is illuminated ...
Outlines can be presented as a work's table of contents, but they can also be used as the body of a work. The Outline of Knowledge from the 15th edition of the Encyclopedia Britannica is an example of this. Wikipedia includes outlines that summarize subjects (for example, see Outline of chess, Outline of Mars, and Outline of knowledge).