Skip to main content
  Tags                  
Languages Language - English Language - Japanese Language - German Language - Chinese Language - Spanish Language - Italian Language - French Language - Portuguese    
Language Quality HT MT AT NT INT - Internal          
All All - FARO Products                  
Hardware Hardware - All FARO Products                  
Accessories Accessories - All FARO Accessories                  
FaroArm FaroArm - All Models                  
USB FaroArm USB FaroArm - All Models USB FaroArm - Quantum S M USB FaroArm - Advantage USB FaroArm - Digital Template USB FaroArm - Edge USB FaroArm - Fusion USB FaroArm - Platinum USB FaroArm - Prime USB FaroArm - Quantum USB FaroArm - Titanium
Serial FaroArm Serial FaroArm - All Models Serial FaroArm - Bronze Serial FaroArm - Gold Serial FaroArm - Silver            
Gage Gage - All Models Gage - Standard, Plus, Power Gage - Bluetooth              
ScanArm or Laser Line Probe ScanArm or Laser Line Probe - All Models ScanArm or Laser Line Probe - Edge LLP V4 ScanArm or Laser Line Probe - LLP V1 V2 V3              
FaroArm Accessories FaroArm Accessories - All FaroArm Models FaroArm Accessories - USB FaroArms FaroArm Accessories - Platinum FaroArm Accessories - Titanium FaroArm Accessories - Gage FaroArm Accessories - Serial FaroArms FaroArm Accessories - Gold Serial FaroArms FaroArm Accessories - Silver Serial FaroArms FaroArm Accessories - All LLP Models FaroArm Accessories - LLP V1 V2 V3
Laser Tracker Laser Tracker - All Models Laser Tracker - Vantage S M E Laser Tracker - Vantage Laser Tracker - ION Laser Tracker - Si X Xi          
Laser Tracker Accessories Tracker Accessories - All Models Tracker Accessories - Vantage Tracker Accessories - ION Tracker Accessories - Si X Si            
Imager 3D Imager - Cobalt                  
Laser Scanner Laser Scanner - All Models Laser Scanner - Focus S M E Laser Scanner - Focus3D Laser Scanner - Photon            
Laser Scanner Accessories Laser Scanner Accessories - All Models Laser Scanner Accessories - Focus S M E Laser Scanner Accessories - Focus3D Laser Scanner Accessories - Photon            
Hand Held Scanner Hand Held Scanner - Freestyle                  
Laser Projector Laser Projector - Tracer                  
Imaging Laser Radar Imaging Laser Radar - VectorRI                  
Computers Computers - All Computers                  
Software Software - All FARO Software                  
CAM2 CAM2 - Measure CAM2 - SmartInspect                
SCENE SCENE - All SCENE Suite SCENE - Capture and Process SCENE - WebShare Cloud and WebShare 2Go SCENE - WebShare Server and Webshare 2Go            
Legacy Software Legacy Software - CAM2 Gage Legacy Software - Gage Software Legacy Software - Insight              
Zone & ARAS FARO CAD Zone - Fire & Insurance FARO CAD Zone - Crime & Crash FARO CAD Zone - CZ Point Cloud FARO CAD Zone - First Look Pro FARO Zone - 2D FARO Zone - 3D FARO 360 - Reality FARO 360 - HD FARO 360 - Blitz FARO 360 - Genius
PointSense1 PointSense - Basic PointSense - Pro PointSense - Building PointSense - Plant PointSense - Heritage PointSense - Revit CAD Plugin - TachyCAD Building CAD Plugin - TachyCAD Archeology CAD Plugin - TachyCAD Interior  
PointSense2 CAD Plugin - PhoToPlan Basic CAD Plugin - PhoToPlan CAD Plugin - PhoToPlan Pro CAD Plugin - PhoToPlan Ultimate CAD Plugin - DisToPlan CAD Plugin - MonuMap CAD Plugin - hylasFM CAD Plugin - VirtuSurv    
VI-Tracer-BuildIT Visual Inspect - App Visual Inspect - CAD Translator RayTracer - RayTracer BuildIT - BuildIT BuildIT - Projector          

CAM2

Measure

English

FARO® Knowledge Base

Accuracy of Measurements for the RMS or Max Error When Doing a Move Device in CAM2 Measure

When performing a device move in FARO® CAM2® Measure 10, CAM2 Q, or CAM2 Measure X, the only data that can be reported is the statistical results of the data used in the form of an RMS, Standard Deviation or a Max Error. However, the algorithm used during a device move is a least squares and can be affected by geometry, spacing, quantity of points, etc. A device move with very few points of poor geometry could yield better statistical results but worse results throughout the measurement volume than a fit with more points of better geometry.

For example, a fit of 4 points with 3 of them almost in a straight line could yield a statistical average of 0.025mm, but may not be ideal. The 4th point off to the side is the only feature that is available to constrain rotation about the line created by the 3 other points, therefore, the constraint of this particular rotation is affected more by random measurement error than if there was an additional point or two scattered around. This could be seen as poor reproducibility on other points that are not included in the device move. The additional of other points may result in an average error of 0.040 mm but actually give better reproducibility on points that are not included in the device move or outside of the envelope of the control points.

For this reason, it is best to include many points over the full volume of the desired measurement envelope. When doing so, the average error of the device move is a better representation of the error that would be present in side the envelope on points not included in the device move. Of course, this is assuming that the environment is stable and the control point network used for the device moves is not moving itself.