2 Lines and Geometry in Technical Drawings Before a technical object can be manufactured, its shape and dimensions must be determined. A technical drawing must be created. Before a technical object can be manufactured, its shape and dimensions must be determined. A technical drawing must be created. Technical drawings can be made by hand or on a computer. Technical drawings can be made by hand or on a computer. Technical Drawings: are used in technology to communicate information about an object or a system. Technical Drawings: are used in technology to communicate information about an object or a system. EST AST
