Area Tool
Select to open the Area Tool floating window. First select options in the Settings and Markup panels, and then draw a set of lines line over a PDF object whose area you want to measure. Click to change line direction and double-click to close the shape. See Measure an area of a polygon for details.
View tab
The View tab displays the current value of the measurement and the cursor location.
Measurement:
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Distance: As you draw the current section of a set of lines, the length is displayed dynamically.
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Angle: Shows the angle of the first line section related to the X axis; for subsequent line sections, it shows the angle relative to the previous section. No signs or directions of rotation are considered.
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Area: The area of the polygon is displayed when the drawing is completed.
Cursor Location:
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X: The X coordinate of the cursor position relative to the top left page corner.
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Y: The Y coordinate of the cursor position relative to the top left page corner.
Settings tab
See Distance Tool floating window for details.
Markup tab
Use the Markup tab settings to preserve measurement values in comments.
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Use Markup: Store the current and future measurements with your PDF document; otherwise, all results are discarded as soon as you start a new measurement. In the text field, type the text to display in a pop-up comment window when you hover the cursor over any line in the shape.
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Measuring Color: Set the color for measuring lines.