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RDS Quick Check

Braz60
When performing the RDS Quick Check, with the calibrated length bar provided with the Romer arm, is it necessary to get every part of the arm to be GREEN to match the same as shown on screen?
Having difficulty to get everything to turn GREEN to take points as designated.
  • I would say yes, mostly if you want to measure accurately. (as accurately as what a Romer can !)
    If not, you can also change the values of acceptation... but it's not really a good advice !
  • I don't have a ROMER, but logic would state that if you have a calibrated artifact, and you're measuring it, it would have to be "green" (which I'm assuming means in tolerance?), because it's calibrated, traceable back to where the **** it comes from, to the X decimal, blah blah.

    EDIT:
    As JEFMAN states, you can just adjust the tolerance, which would make things in, but then you're basically writing down whatever you feel like, and that's Creative Writing, not Metrology Wink
  • Braz60...as stated to me by Tech support. The green indicators are just a quide. I personally have never been able to get the arm to completely turn green on every position. If I get the arm to completely turn green on 1 or 2 out of the 9 or 12 positions ( i forget ) I consider myself lucky.
  • Braz60...as stated to me by Tech support. The green indicators are just a quide. I personally have never been able to get the arm to completely turn green on every position. If I get the arm to completely turn green on 1 or 2 out of the 9 or 12 positions ( i forget ) I consider myself lucky.

    I also contacted Hexagon and they stated the same thing it's not necessary to have all parts of Arm green it's more of a guide line. Also when verifying accuracy to length bar the 3 results to be concerned about
    are the Minimum / Maximum and Range/2 results compared to the Certificate of Traceable Calibration that came with the Romer Arm.
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