Skip to main content
                     
As-Built As‑Built - Revit As‑Built - AutoCAD VirtuSurv - VirtuSurv 2018 As‑Built - Modeler            
BuildIT BuildIT - Metrology BuildIT - Projector BuildIT - Construction              
CAM2 CAM2 - SmartInspect CAM2 - AnthroCAM CAM2 - 2018 CAM2 - Measure 10 CAM2 - Measure Q CAM2 - Measure X CAM2 - Measure 3/4      
Cobalt 3D Imager 3D Imager - Cobalt                  
Computers Computers - All Computers                  
FARO Aras 360 & CAD Zone FARO 360 - Reality FARO 360 - HD FARO 360 - Blitz FARO 360 - Genius FARO CAD Zone - Fire & Insurance FARO CAD Zone - Crime & Crash FARO CAD Zone - CZ Point Cloud FARO CAD Zone - First Look Pro    
FARO Zone FARO Zone - 2D FARO Zone - 3D                
FaroArm/ScanArm FaroArm/ScanArm - Edge ScanArm - Design ScanArm ScanArm - Forensic ScanArm ScanArm - Design ScanArm 2.5C ScanArm - Design ScanArm 2.0 FaroArm/ScanArm - Quantum S FaroArm/ScanArm - Quantum M FaroArm/ScanArm - Quantum E FaroArm/ScanArm - Fusion FaroArm/ScanArm - Prime
FaroArm/ScanArm FaroArm/ScanArm - Platinum FaroArm/ScanArm - Legacy Quantum FaroArm/ScanArm - Titanium FaroArm/ScanArm - Advantage FaroArm/ScanArm - Digital Template          
Gage Gage - Bluetooth Gage - Plus Gage - Standard Gage - Power            
Hand Held Scanner 3D Hand Held Scanner - Freestyle3D 3D Hand Held Scanner - Freestyle3D X 3D Hand Held Scanner - Freestyle3D Objects 2D Hand Held Scanner - ScanPlan            
Language Quality HT MT AT NT INT - Internal          
Languages Language - English Language - Japanese Language - German Language - Chinese Language - Spanish Language - Italian Language - French Language - Portuguese    
Laser Projector RayTracer - RayTracer Laser Projector - Tracer M Laser Projector - Tracer SI              
Laser Radar Imaging Laser Radar - VectorRI                  
Laser Scanner 3D Laser Scanner - Focus S 3D Laser Scanner - Focus M 3D Laser Scanner - Focus3D 3D Laser Scanner - Focus3D X 3D Laser Scanner - Focus3D X HDR 3D Laser Scanner - Focus3D S 3D Laser Scanner - Photon      
Laser Tracker Laser Tracker - Si Laser Tracker - ION Laser Tracker - Vantage S6 Laser Tracker - Vantage Laser Tracker - X Laser Tracker - Xi Laser Tracker - Vantage S Laser Tracker - Vantage E Laser Tracker - Vantage E6  
Legacy Software Legacy Software - CAM2 Gage Legacy Software - Gage Software Legacy Software - Insight              
Photonics Scan Head - Digi-Cube Scan Head - Xtreme Scan Head - 3D-Contour Scan Head - 3D-Ultralight Scan Head - 3D-XB Controller - Maestro 3000 Nutfield - Nutfield Hardware Nutfield - Nutfield Software Controller - LEC Series  
PointSense PointSense - Basic PointSense - Pro PointSense - Building PointSense - Plant PointSense - Heritage PointSense - Revit CAD Plugin - TachyCAD Building CAD Plugin - TachyCAD Archeology CAD Plugin - TachyCAD Interior CAD Plugin - PhoToPlan Basic
PointSense CAD Plugin - PhoToPlan CAD Plugin - PhoToPlan Pro CAD Plugin - DisToPlan CAD Plugin - MonuMap CAD Plugin - hylasFM CAD Plugin - VirtuSurv CAD Plugin - PhoToPlan Ultimate      
RevEng RevEng - RevEng                  
SCENE SCENE - Capture and Process SCENE - WebShare Server and 2Go SCENE - WebShare Cloud SCENE - WebShare 2Go App SCENE - 2018 SCENE - 4.x SCENE - 5.x SCENE - 6.x SCENE - 7.x SCENE - LT
SCENE SCENE - 2019                  
Serial FaroArm Serial FaroArm - Bronze Serial FaroArm - Gold Serial FaroArm - Silver              
Visual Inspect Visual Inspect - App Visual Inspect - CAD Translator                

CAM2

2018

English

FARO® Knowledge Base

Geometry Measurement with CAM2

CAM2-Beauty.png

Overview

The purpose of this article is to advise on the method required to measure features, using a FaroArm® or Laser Tracker.

Download a PDF of this procedure:  MS001: Geometry Measurement

Introduction

When measuring with a ball probe or SMR, a reading is taken in the center of the probe each time the green button or G key is pressed. This means that the reading taken is offset from the surface probed, and is known as Probe Offset.

MS001Fig1.png

To ensure the correct position or size of a feature is calculated, the reading must be projected by the probe radius, to the surface probed. This transfer of the point from the center of the probe to the correct location is known as Probe Compensation.

Probe compensation is applied once all readings have been taken, by moving the probe or SMR perpendicular to the surface probed, and then pressing the red button or H key.

MS001Fig2.png

2D Geometry

Consists of the following features:
MS001Fig3.png

These require a projection plane where each reading taken, will be projected, to create the 2D feature.

MS001Fig4.png

3D Geometry

Consists of the following features:
MS001Fig5.png
These do not require a projection plane.

Minimum and Recommended Readings

Each feature requires a minimum number of readings to be taken, to enable that geometry to be calculated and calculated by CAM2. The table below details the minimum and recommended number of readings for each geometry type.

Feature Minimum Number of Readings Recommended Number of Readings
Plane 3 7
2D Line 2 5
Circle 3 7
Round Slot 6 13
Rectangular Slot 6 13
Ellipse 5 11
Cylinder 6 13
Cone 6 13
Sphere 4 9
Torus 8 17
Paraboloid 8 17

Along with the number of readings, the distribution of readings is also important to ensure the correct calculations. The images below show the suggested distribution of points during measurement. The numbered points show the recommended distribution is using the minimum required

  • Line
    MS001Fig7-Line.png
  • Plane
    MS001Fig6-Plane.png
  • Circle
    MS001Fig8-Circle.png
  • Round Slot
    MS001Fig9-RoundSlot.png
  • Rectangular Slot
    MS001Fig10-RectSlot.png
  • Ellipse
    MS001Fig11-Ellipse.png
  • Cylinder
    MS001Fig12-Cylinder.png
  • Cone
    MS001Fig13-Cone.png
  • Sphere
    MS001Fig14-Sphere.png
  • Torus
    MS001Fig15-Torus.png
  • Paraboloid
    MS001Fig16-Paraboloid.png
  • Was this article helpful?