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FARO® Knowledge Base

Tube Measurement - By Cylinders Method in CAM2



The purpose of this article is to advise how to measure tubing / pipe using Measure Tube – By Cylinders method.

Download a PDF of this procedure:  MS003: Tube Measurement - By Cylinders Method


  • Mount / fix the tube / pipe firmly within reach of the FARO® device (FaroArm /Laser Tracker)
  • Establish the Start and Finish end faces.
  • Identify the cylinders (straight sections) to be measured
  • Key-in nominal tube data if available. (Key-in – Tube)


From the Measurement ribbon select Tube by Cylinders (also via Home - Measurement gallery).

  • MS003Fig2.jpgThe Tube properties window will be shown:
    1. Name and Comments can be entered
    2. Override Diameter
      • check to enter tube diameter.
      • uncheck to use measured value.
    3. Starting Plane
      • Choose an existing start plane or Define to measure a plane.
    4. Ending Plane
      • Choose an existing end plane or Define to measure a plane.
      • Plane calculation methods: There are 3 methods to fine-tune tube length:
        • None - best fit plane from readings
        • High Point - highest plane reading (maximizes tube length)
        • Low Point - lowest plane reading (minimizes tube length)
    5. Nominal - select Nominal Tube if available. This will also automatically align the Measured and nominal tubes, providing comparison data.
    6. Default Bed Radius - enter default bend radius This is normally detailed on the component drawing with the tube / pipe bend data.


  • Click Create to start measurement.
  • The Measurement window will show prompt to Measure Tube - Start plane.
    • Probe a minimum 3 points on start plane of the tube using the green button / G key.
  • The Output window will then prompt to Measure Straight Segments.
  • Probe a minimum 6 points (cylinder) on each straight section using the green button / G key.

Note: Ensure not to probe on the bends, and end each straight using the red button / H key.

  • Once all the straights have measured, press the red button again, to indicate that there are no straights remaining.
  • The Measurement Window will prompt to Measure Tube - End plane.
    • Probe a minimum 3 points on End plane of the tube using the green button / G key
  • If a nominal tube was selected in the Properties window, the measured tube will automatically be aligned using all breakpoints (best fit) and compared to the nominal tube.

See Also



Help Sheet, MS003

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