Length measurement



1. If you click on 'Length measurement' menu       * Menu > Analysis > Length measurement

    you are allowed to move the selection line to a reference ruler (bottom arrow).

    Because the length of the line (454 pixels) is equal to 20 cm, you can set 20 cm (upper arrow)



2. Click on the 'Lock current conversion factor' to maintain the same conversion factor (right arrow).

    Please move the selection line to another place (left arrow).

    As shown in the image, the current length is 8.733 cm.


Once you check the 'Lock current conversion factor' on, you can choose the Path tool.






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