This AutoCAD LISP script automates the labelling of line bearings and lengths directly within the CAD environment for precise technical documentation. AnnotateLines is a specialized AutoLISP routine designed to streamline technical drafting by automatically calculating and placing text labels along linear entities. It extracts geometry data from selected lines, including precise length and compass bearing, and generates corresponding text objects at the midpoint of each line. The script eliminates the need for manual measurement and text entry, ensuring consistency across large-scale site plans and boundary surveys. It is built to function seamlessly within standard CAD workspaces, providing a reliable method for documenting complex site geometry without requiring additional proprietary software extensions or complex setup procedures.

The download is a single file containing .LSP files.

To implement this script, load the LSP file into the AutoCAD session using the APPLOAD command. Once initialized, the user selects the target lines, and the routine automatically processes the geometry to generate the required text labels. Users should ensure their current text style and layer settings are configured to match project standards before execution. The resulting annotations remain as standard CAD text objects, allowing for further editing, resizing, or layer reassignment as needed for final output.

This tool is essential for civil engineers, landscape architects, and land surveyors working on site plans, subdivision layouts, and property boundary mapping. It is particularly effective during the schematic design and construction documentation phases where accurate site data is critical. By automating repetitive annotation tasks, it integrates smoothly into workflows involving large-scale site analysis or complex urban planning projects. Professionals will find it highly efficient for maintaining precision in site geometry when preparing deliverables for planning departments or engineering review boards.