The Ruler Tool cannot draw by itself; use it with a supported writing tool. Its measurement option is “Change to Inches/Centimeters”.
The Ruler Tool works with the Pen Tool, Highlighter Tool, and Pencil Tool. Strokes drawn along either edge snap to the ruler.
Show the ruler
- Select the Ruler Tool.
- Wait for the ruler to appear on the current page.
The scale adjusts to the current zoom level.
Draw a straight line
- Place two fingers on the ruler and rotate it, or use Set Angle.
- Draw along either edge with the Pen Tool, Highlighter Tool, or Pencil Tool.
- Use the scale as a guide for the line length.
Drag along the ruler with one finger to reveal a section of the scale outside the visible page.
Customize or hide the ruler
- With the ruler visible, select it twice.
- Choose Set Angle, Set Position, Hide, or Options.
- Under Options, choose Hide Digits or Change to Inches/Centimeters.