A vendor primer from TriMech groups industrial 3D scanners into four accuracy-and-size buckets, and that taxonomy is the most useful takeaway for spec writing. [S1]
Specifying engineers usually get asked to pick a scanner by tolerance band and part envelope before anyone mentions brand. TriMech's four-tier framing lines up directly with that decision: industrial CT for micron-class metrology on internal features, structured light or laser at or below 25 microns for engine-block-class metrology, portable arms up to 50 microns for large parts, and LiDAR for submillimeter work on very large objects. Two practical limits from the article belong in any spec note: structured light is sensitive to ambient lighting and reflective or transparent surfaces, and some scanners cannot operate in direct sunlight. [S1]
What the article covers
TriMech published an overview of industrial 3D scanning technology, framing the market by accuracy and object size rather than by brand. [S1]
The piece defines four device categories: industrial CT scanners, high-precision structured light and laser 3D scanners, portable 3D scanners, and LiDAR scanners. [S1]
It focuses most detail on the metrology-grade structured light and laser category, covering operating principles, named products, limitations, and two application areas: part inspection and quality control. [S1]
Numbers and named products in the source
Industrial CT scanners are stated at up to 1-2 microns accuracy; high-precision structured light and laser scanners at or below 25 microns; portable scanners at up to 50 microns; and LiDAR at submillimeter accuracy. [S1]
The article names ZEISS ATOS Q, GOM Scan 1, and Artec Micro as metrology-grade structured light scanners, and T-SCAN Hawk 2 and Artec Point as metrology-grade laser 3D scanners. [S1]
A TriMech Design team case study describes a mold replacement where the first new-mold design used approximately 50% more material than the original, with the rework performed in Geomagic Control X by comparing scanned parts against the new-mold model. [S1]
What it means for the 3D scanner category
For spec work, the taxonomy gives a quick filter: pick the accuracy band first, then enforce the object-size envelope, and only then compare specific units within a band. [S1]
TriMech positions structured light and laser scanners as the dominant metrology tools, with accuracy somewhat lower than CMMs and industrial CT but with the throughput and portability that suit line-side inspection. [S1]
Two limitations matter for site acceptance: structured light is more sensitive to ambient lighting and can struggle with reflective or transparent surfaces, and some scanners cannot operate in direct sunlight, so laser units are the safer pick for varied lighting or outdoor work. [S1]
How to check the primary source
Read the full TriMech article at the source URL to see the complete accuracy-and-size chart and the continuation of the quality control section, which is cut off in the excerpt. [S1]
Cross-check each named scanner's current accuracy, working volume, and software compatibility on the manufacturer's datasheet before writing it into a specification, since the article is a 2025-06-30 vendor overview and product data changes between revisions. [S1]
If the spec targets CMM-comparable metrology, request a measurement systems analysis from the vendor covering accuracy, repeatability, and probe or field-of-view effects for the part family in question. [S1]
Primary notice: Industry news.
Product encyclopedia: 3D Scanner.