Measuring the cumulative length of hundreds of lines manually in AutoCAD is a tedious process that often leads to errors. The (Total Length) routine is one of the most popular third-party AutoLISP scripts used to automate this task, providing a single-click solution for calculating the total distance of selected objects like lines, polylines, and arcs. What is TLEN.lsp?
TLEN.LSP. Find (defun c:tlen and change to (defun c:TL for a shorter command.offer highly polished, professional-grade alternatives that include both total length and area calculations. Autodesk Community, Autodesk Forums, Autodesk Forum How to Make It Work Solved: New tlen.lsp for polylines - Autodesk Community autocad tlenlsp download work
QSELECT → choose "Line" → specify length > 0.