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Try it!
Add dimension shapes to your Visio Professional diagrams to show the size of a shape in a scaled drawing.
Display measurements on the diagram
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              Select More Shapes > Visio Extras > Dimensioning-Architectural. 
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              Drag a dimension shape onto the drawing page, and place it near the shape you want to measure. 
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              Glue the ends of the dimension shape to the points you want to measure. 
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              Drag the yellow circle on the dimension text to move the text, or select Home > Text Block and drag the text or the text handle. 
Change the measurement units
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              Right-click the dimension shape, and select Precision & Units. 
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              Choose a different unit, and select OK. 
Change the size of a shape
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              Select View > Task Panes > Size & Position. 
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              Select a shape. 
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              Enter new values for Width or Height. 
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              Select a blank area of the drawing page to make the change. 
 
                         
				 
				