Beginning in the second half of the eighteenth century in England,industrial revolution in the XIX century swept through many countries in Europe and the world. It was characterized by rapid development of technology and industrial production. Manufacture of products moved from manufactories and workshops to large factories and plants. However, the transition from individual and small-scale production to mass production, as well as the division of labor, required the creation of a variety of design and technological documentation, which led to the development of applied discipline - drafting.
With the development of computer technology, mostdesign documentation began to be translated into an electronic form, which facilitates the creation, storage, forwarding and replication of drawings and process maps. Special programs are used for this. For example, AutoCAD is used for drawing drawings, and Word for Word documents is included in the Microsoft Office package. Along with paid software, there is also a free: NanoCAD, Open Office.
Accordingly, these programs were removed andconventional symbols, including the diameter sign. It does not exist on the standard keyboard layout, so to paste it into a document created using a text editor in Word, you need to go through the following path: "Insert → Symbol → Other Symbols → switch" Font "to" Symbol "→ Æ". The code for the diameter sign in "Character (hex)" is 00C6. Since this element is not present in all fonts, it can be replaced with a crossed out "o": "Ø", the code is 00D8 in "Unicode (16)".
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