Size calibration

The diagonal of your monitor: 16.3"

1. Enter the full name or nickname of the subject:  

2. Take any plastic card and apply a dark red area to the screen. Use the plus and minus buttons to achieve the best match between the rectangle and the plastic card. And click the "Save Settings" button. After that, you can return to taking tests.

If you are using a mobile device, turn it horizontally.


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