Technical drawing is the line language used by technical personnel for the production of any machine or parts of this machine. It is not possible to express a piece of machinery, a construction or a facility in words and in writing. Because we cannot give any idea about the shape, dimensions and other features of the mechanism we want to express verbally and in writing. Full information is possible only with technical drawing. Because the technical drawing specifies the shape, dimensions, material, tolerances and surface quality of a machine and provides mutual agreement.

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Only people who have technical drawing training can understand these features. In order for the drawn picture to be easily understood and produced, it must be drawn according to international standards.