> 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/collect-measurements/enter-values-for-manual-calibration.md).

# Enter values for manual calibration

During the manual calibration, after the reference measurements were read, a form is opened, where the user shall manually enter calibrated sensor readings into "Value" column.

<figure><img src="/files/C6OXq6craanRM3JKWr2W" alt="" width="305"><figcaption></figcaption></figure>

<mark style="background-color:yellow;">**The readings entered must match the timestamps of the reference readings.**</mark>

Tap “OK” to accept the values. Tap “Cancel” to return to the beginning of “Sign and finalize” process. Tap “Discard” to discard the calibration.


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