Center Radius measurement

1. Go to Tools > Measure > Center Radius.
   • Alternatively, select Center Radius on the Measurements panel.

2. To change the units for any dimension, select the desired measurement units from the dropdowns in the Measurement Properties section of the Measurements panel. Measurements can be taken in units different from those used to set the page scale.

   • Any or all of these can also be set from the Units dropdown menu on the Properties toolbar.
   Changes you make to properties will apply to all new measurements until you switch tools (for example, when you place a different type of measurement).
3. In your document, click to set the center of the circle.

4. After you set the center point, choose one of the following:

   • To draw a full circle, click any point on the circumference. As you move the cursor away from the center, the radius appears.
   • To draw just a section of the circle (an arc), click the first point on the arc, hold the mouse button, drag along the arc, and release at the second point.
     • Hold Shift while dragging to draw the arc in 45° increments..

When you've set the page scale, a preview of key measurement values appears in the lower-right corner as you place measurements to ensure precision. Hide or recall it as needed by selecting the X or the measure icon.

Tips:

• Revu prevents arcs larger than 180° (a semi-circle). If you try to draw a larger arc, it flips on its axis. To create an arc larger than 180°, resize the Center Radius measurement after placing it or use the Three-Point Radius Measurement tool.
• Hold Ctrl and drag an existing markup to automatically copy it
• Change properties (Subject, Label, units, Slope, Depth) after placing the measurement by selecting it and using the Measurements panel.

To remove markups from your PDF, do one of the following:

• Select the markup on the PDF or from the Markups list.
• Press Delete on your keyboard, or right-click and select Delete.

You can add an action to almost any markup. Right-click the markup and select Edit Action.

Markups may display indicator icons below and to the right of the markup (or grouped markups). These include:

Action: Shows that an action is defined for this markup. Select to trigger the action.

Capture: Shows that the markup has embedded media (typically an image or video). Select this icon to open a preview window.

Reply: Shows one or more replies exist in the Markups list. Hover to preview replies or select to jump to the markup's entry. Turn off the ability to see reply indicators in the View menu.

Select a markup to reveal its control handles. Each handle controls a different aspect of size and orientation.

Rotate the markup: Drag the orange handle outside the markup (default: 15° increments; hold Shift for 1° increments)

Rotate the caption: Drag the orange handle directly over the caption.

Change the length of the radius: Drag the yellow handle at the circle's center.

Move the entire markup: Drag any part except the control handles.

Scale the markup up or down: Drag the appropriate purple handle.

See Editing Markups for more information.

You can customize the appearance of a radius measurement, including line and fill color, hatch pattern, line width and style, opacity, caption font, and whether to show the caption.

To change the appearance of a Radius measurement, select the markup and select the Properties panel. Go to Window > Panels > Properties to show the Properties panel if it is hidden.

Appearance properties

Color: Sets the line color.

Fill Color: Sets a fill color.

Highlight: Makes the fill color and/or hatch pattern transparent so underlying content shows through.

Hatch: Sets a hatch pattern. The associated color selector sets the line color of the hatch pattern.

Scale: Sets the scale of the hatch pattern, from 50 (half the default scale) to 200 (twice the default scale).

Opacity: Sets opacity level of the line and endpoints, from 0 (invisible) to 100 (opaque).

Fill Opacity: Sets the fill and hatch pattern opacity, from 0 (invisible) to 100 (opaque).

Line Width: Sets the line thickness in points. A setting of 0 effectively renders the line invisible.

Style: Determines the line pattern.

Show Caption: Display caption text. Select Edit to choose which measurements to show.

Show Centroid: Display the geometric center. If necessary, the caption will be automatically adjusted to be below the centroid.

Font: Sets the font used for the selected text. Available fonts are divided into three regions:

• The first region shows all fonts used in the currently selected text element.
• The second region lists the standard PDF fonts that are supported by all PDF viewers. These fonts don't need to be embedded in the PDF when used, thereby cutting down on file size.
• The third region shows all other available fonts. When used, these fonts need to be embedded in the PDF.

If you attempt to embed a font for which the viewing and editing permissions do not allow formatting, Revu will display a message indicating the font will not be embedded in the PDF.

Font settings are retained in the PDF and will substitute as needed if the original font is unavailable.

Font Size: Sets the font size for text. You can choose a size from 2 to 72 points in the list, or enter any value from 1 to 144 points manually. You can also use decimal values with one digit after the decimal point.

Text Color: Sets the color of text.

Font Style: Control the formatting of the text. Options include Bold, Italic, Underline, and Strikethrough. Generally, any combination of these styles can be applied to format the text.