Function Syntax: tlen https://gist.github.com/kevinluo201/51450de14f63382c046c6d840bb42c96 📏 Description This AutoLISP program TLEN calculates and reports the total length of selected AutoCAD drawing objects. It provides a fast AutoCAD length takeoff workflow for CAD drafting, Civil 3D production checks, quantity verification, and geometry measurement. The result is displayed in an AutoCAD alert window using the current drawing units. 🚀 Main Command Run TLEN in the AutoCAD command line, select the objects to measure, press Enter, and review the total length result. 🔍 SEO Optimized Description 📏 TotalLengthPolyline is an AutoCAD AutoLISP total length calculator for selected drawing geometry. 📐 The routine measures supported entities such as LINE, ARC, CIRCLE, SPLINE, POLYLINE, LWPOLYLINE, and ELLIPSE objects. 📊 It is useful for CAD quantity checks, road and utility drafting, polyline length verification, perimeter checking, and quick production measurements inside AutoCAD and Civil 3D. ⚙️ Functionalities • 📌 Prompts the user to select objects to measure with ssget. • 📐 Computes lengths for LINE, ARC, CIRCLE, SPLINE, POLYLINE, LWPOLYLINE, and ELLIPSE. • 📏 Uses geometric point-to-point calculation for line objects with distance. • 🟠 Calculates arc length from radius and angular span. • 🔄 For closed or curve-based objects, retrieves perimeter using the AutoCAD AREA command with the object option. • ➕ Sums the lengths of all valid selected objects into one final total. • 📢 Displays the total length in current drawing units via an AutoCAD alert box. 🧩 Important Commands and Variables • TLEN - Main command to execute the total length calculation. • ssget - Gathers the selection set. • distance - Calculates line segment length. • getvar perimeter - Retrieves the perimeter for supported curve and closed objects. • rtos - Formats the total length for display. 📝 Function Syntax TLEN ✅ Typical Workflow Type TLEN, select multiple supported objects, press Enter, and view the total length displayed in an alert box. ⚠️ Important Notes Objects outside the supported entity list are ignored with a zero length contribution. The command reports the result in current AutoCAD drawing units. The tool displays the result only in an alert box. It does not insert MTEXT, export to Excel, create a table, or copy the result to the clipboard.