Engineering drawing is a form of technical communication that conveys information about an object or system to be constructed, repaired, or maintained. It is used to accurately and clearly represent the design of an object or system, including its dimensions, tolerances, materials, and other important characteristics.

Engineering drawings are used throughout the engineering design process, from the initial concept phase to the final construction phase. They are an essential tool for communication between engineers, designers, drafters, manufacturers, and other stakeholders involved in the project.
There are various types of engineering drawings, including architectural drawings, mechanical drawings, electrical drawings, and civil drawings. Each type of drawing has its own set of conventions and standards, which are used to ensure that the drawing is clear, accurate, and easily understood by all parties involved.
One of the key conventions used in engineering drawing is the use of standardized symbols and notation. These symbols are used to represent various types of features, such as lines, circles, arcs, and text, and they allow the drawing to be read and understood by anyone with knowledge of the conventions.
Another important aspect of engineering drawing is the use of scales. Drawings are often created at a smaller scale than the actual object or system, which allows them to be more easily understood and manipulated. The scale is indicated on the drawing, and it allows the user to accurately measure and understand the dimensions of the object or system.
In addition to the use of symbols and scales, engineering drawings also often include notes and annotations. These notes provide important information about the object or system, such as tolerances, materials, and other characteristics.
One of the main benefits of engineering drawing is that it allows for the accurate and efficient communication of complex designs and systems. It is an essential tool in the engineering design process and is used in a wide variety of industries, including architecture, mechanical engineering, electrical engineering, and civil engineering.
Overall, engineering drawing is a crucial aspect of the engineering design process, and it is an essential tool for ensuring that designs are accurately and clearly conveyed to all parties involved. It allows for the efficient communication of complex designs and systems, and it is used in a wide variety of industries.