PRO: Measurement Tools - Calibrate, Linear and Area Measurements

**NOTE: This is a Drawboard PDF PRO feature only**

To access Measurement tools within the radial menu, tap on 'Insert' then 'Measure'

To begin, calibrate a known length by tapping on the 'Calibrate' tool then measure out a distance and insert the known scale/measurement.

The units of measurement can be changed within the app Settings:

Once the PDF has been calibrated, you can measure out linear distances or rectangular/polygon areas.

The properties of these shapes can be changed in the layer deeper in the radial menu.

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