Technical drawing, drafting or drawing, is the act and discipline of composing drawings that visually communicate how something functions or is constructed.
Technical drawing is essential for communicating ideas in industry and engineering. To make the drawings easier to understand, people use familiar symbols, perspectives, units of measurement, notation systems, visual styles, and page layout. Together, such conventions constitute a visual language and help to ensure that the drawing is unambiguous and relatively easy to understand. Many of the symbols and principles of technical drawing are codified in an international standard called ISO 128.
The need for precise communication in the preparation of a functional document distinguishes technical drawing from the expressive drawing of the visual arts. Artistic drawings are subjectively interpreted; their meanings are multiply determined. Technical drawings are understood to have one intended meaning.
A drafter, draftsperson, or draughtsman is a person who makes a drawing (technical or expressive). A professional drafter who makes technical drawings is sometimes called a drafting technician.
Norwich (/ˈnɒrɪdʒ, -ɪtʃ/ (About this soundlisten)) is a city in Norfolk, England, situated on the River Wensum in East Anglia, about 100 miles (160 km) north-east of London. A city since 1094, Norwich is the county town of Norfolk and unofficially seen as East Anglia's capital. From the late Middle Ages until the Industrial Revolution, Norwich was the largest city in England after London and one of the most important. The present-day population of the city is about 142,000.