Friday, 5 December 2025

Why “±1 mm Accuracy” in 3D LiDAR Scanning Doesn’t Mean What You Think


 3D LiDAR Scanning

If you’ve ever looked at a scanner brochure and seen “±1 mm accuracy”, it’s easy to assume every measurement from that scanner will fall neatly inside one millimetre. But anyone working in engineering, mining, fabrication or construction knows reality is rarely that simple — especially when it comes to 3D LiDAR scanning.

Recently, I published a deep-dive article that explains what FARO’s accuracy claims really mean in real-world conditions, including:

  • Why ±1 mm only applies to one part of the scanner

  • How distance affects point-cloud accuracy

  • Why some surfaces produce clean data and others don’t

  • How environmental conditions like wind, heat shimmer and dust can shift results

  • Why registration — not the scanner — determines final accuracy

  • When you can rely on millimetre-level precision (and when you can’t)

If you rely on 3D LiDAR scanning for retrofit design, fabrication planning, engineering, surveying or as-built documentation, this is essential reading.

Many project teams and clients make decisions assuming the scanner itself guarantees the accuracy. The truth is more nuanced — and understanding it can prevent rework, cost blowouts and unnecessary disputes.

👉 Read the full breakdown here:
Real-World 3D LiDAR Scanning Accuracy With FARO S150 & S350

This article is particularly useful if you work in:

  • Mining or mineral processing

  • CHPP wash plants

  • Heavy industrial environments

  • Fabrication and modular construction

  • Structural engineering

  • Survey, BIM, or digital engineering

If you’ve ever wondered why your point cloud looks perfect in one area and slightly off in another, or why long linear structures drift even with a high-end scanner, this post explains the underlying reasons in plain language.

Understanding the real behaviour of 3D LiDAR scanning is the difference between “marketing accuracy” and “engineering accuracy” — and it’s critical for anyone designing, building or maintaining complex industrial assets.

📌 Click through to the full article — it may change the way you specify scanning on your next project.

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For more info, please E-mail sales@hamiltonbydesign.com.au


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