What is offset section line?

An offset section line is used in technical drawings and engineering designs to indicate the location of a section cut that does not follow a straight path. This line typically deviates from the primary view to provide a clearer representation of complex features or internal structures. By using an offset section line, designers can enhance the readability of the drawing while still conveying essential information about the object's geometry. It helps in visualizing the interior details of a component without cluttering the main view.