> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/boomerang-3-calibration-app-manual/performing-the-calibration/calibration-run.md).

# Calibration run

After calibration is started its row state changes to “Running” and shows the progress bar. The app uses 10 pairs of readings to calculate the adjustment and uncertainty values.

<figure><img src="/files/YeCUQHahySUjj5mQKfHQ" alt="" width="419"><figcaption></figcaption></figure>

You may "Discard calibration" as described in [Discard calibration](/boomerang-3-calibration-app-manual/performing-the-calibration/discard-calibration.md) or "Recalibrate" as described in [Recalibrate](/boomerang-3-calibration-app-manual/performing-the-calibration/recalibrate.md).

For Boomerang 3 calibration the calibrated measuring point is set into the calibration mode as described in [Presentation of measuring point state](/boomerang-3-calibration-app-manual/calibration-in-boomerang-3/presentation-of-measuring-point-state.md).

The data collected are available for 2 hours after the calibration end and the calibration shall be finalized during this time to finish it correctly i.e., create the certificate and save the adjustment. If it is not finalized during this time, Boomerang 3 will not deliver the data and the calibration shall be discarded.

It is possible to run up to 5 parallel calibrations at the same time. They are started the same way.


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