User guide

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Measure Distance, Area, and Perimeter
The Measure tool enables you to easily define the distance, area, and perimeter for a set of points based
on a scale that you define.
NOTE: Some PDF files include an embedded scale ratio specific to the content of the document. So, for
example, an engineer can define the units of a drawing by exporting it to PDF with an embedding
scale.
To calibrate Measure:
If a PDF file does not have an embedded scale, the Measure tool will adapt the file's default units into
inches. For accurate results, calibration enables you to define a custom scale for your document. It is also
possible to set different measurement scales for each page in a PDF file.
1. On the Review tab, in the Annotations panel, click the arrow beneath the Measure button
2. In the Measure menu, click Calibrate
3. Click anywhere on the page to set the measurement start-point (click Escape to restart)
4. Click anywhere on the page to set the measurement end-point (click Escape to restart)
5. In the Calibrate dialog, define the measurement value and choose the appropriate unit from the
menu.
6. Tick the Apply to all pages checkbox to use the same measurement scale on every page of the PDF
file
To measure distance:
1. On the Review tab, in the Annotations panel, click the arrow beneath the Measure button
2. In the Measure menu, click Distance
3. Click anywhere on the page to set the measurement startpoint (click Escape to restart)
4. Drag the mouse to the end of the distance being measured, and then click to set the endpoint
(click Escape to restart)
5. Slide the mouse up or down to correctly display the boundaries of the measurement, and then
click again to finish
6. You can double-click the measurement stamp to open up an annotation that displays your
measurement as a note. Edit as required.
To measure area:
1. On the Review tab, in the Annotations panel, click the arrow beneath the Measure button
2. In the Measure menu, click Area
3. Click anywhere on the page to set the measurement startpoint (click Escape to restart)
4. Drag the mouse to the next segment of the area and click to set a midpoint. You may set as many
midpoints as required (click Escape to restart).
5. When all the paths of the area have been covered, right-click and select Complete to finish
measuring.
6. You can double-click the measurement stamp to open up an annotation that displays your
measurement as a note. Edit as required.
Nitro Pro 9 - User Guide