Place TLEN.LSP in a dedicated folder, e.g.: C:\CAD\LISPS\ or C:\Users\[YourName]\AppData\Roaming\Autodesk\ApplicationPlugins
This article serves as a comprehensive guide to downloading, installing, and using TLEN.LSP. We will cover what it is, how to get it to work, common problems you might face and how to solve them, as well as introduce a few powerful alternatives.
Select all the lines, arcs, or polylines you want to measure.
Never download .LSP files from unverified websites or direct file‑sharing links that you cannot inspect. AutoLISP scripts can contain malicious code, because they run with the same privileges as AutoCAD itself. Always open any unfamiliar .LSP file in Notepad first and look for suspicious commands (e.g., any reference to (vl-file-delete) , (command “_.erase” “_all”) , or obfuscated gibberish). The official TLEN.LSP code is short, readable, and contains only geometry and math functions. autocad tlenlsp download work
To add your LSP folder to the trusted list:
. Because native AutoCAD tools often lack a single-click "sum" feature for disparate objects, this script is a staple for designers in fields like irrigation and electrical engineering. Key Resources and Downloads Source Code (GitHub Gist) : You can find a clean version of the script on GitHub Gist
The tlen.lsp routine solves this problem by allowing you to: Select an unlimited number of objects simultaneously. Filter out non-linear objects automatically. Place TLEN
Calculating the total length of multiple lines, polylines, arcs, and circles is a frequent requirement in CAD drafting—whether for calculating cable lengths, piping, fencing, or material take-offs. AutoCAD doesn't have a native, single-click command to sum the lengths of complex, disjointed selections.
: One of the oldest and most reliable databases for AutoCAD routines, blocks, and tips.
In the dialog box, navigate to the folder where you saved TLen.lsp . Select the file and click . Never download
Are you planning to use this for , piping , or another specific type of CAD project ? AI responses may include mistakes. Learn more TotalLength | AutoCAD - Autodesk App Store
Automatically add up numerical values inside selected text fields or MText blocks.