Use the Ruler as a guide for measuring and drawing precise lines. 

Accessing the Ruler

•  
  • Tap   in your toolbox to access the ruler. 

Please note: the ruler is not available on Mac or iPhone.

Using the Ruler 

• Use one finger to move the ruler around the screen. 
• One finger tap on the compass will round to the nearest 45º.
• Double tap on the compass will rotate by 90º counterclockwise.
• Vertically pan (slide) the compass to rotate the ruler.

Stamp Precise Lines

• Use one finger double tap to stamp a line onto the page. 
  • Tip: One finger tap and hold on a triangle to preview the target line before stamping.
• You can move both triangle anchors at the same time.

Line detection will snap the line to the ruler even if you started the line away from the ruler.

Dismiss the Ruler

• Select Ruler icon again to dismiss the ruler. 
• Two finger long press or two finger pinch to dismiss the ruler.

Adjust Ruler Unit

• In your Library, go to > Note Editor > Handwriting & Drawing > Ruler Units > choose from Metric or Imperial. 

Angle Measurement Mode

Angle measurement mode lets you measure the difference between two angles using the Ruler.

Using angle measurement mode:

1. Select an angle with the Ruler.
2. Tap and hold the angle handle (compass).
3. A light blue compass circle appears, and the angle difference is displayed in the center of the ruler.
4. Adjust the ruler to measure different angles. The blue circle expands as the angle increases.

This mode works with angles created from both straight and curved lines. To return to the normal ruler, tap and hold the compass again.

Gestures in this mode are performed on the compass circle, not the ruler itself.

Updated May 11, 2026 21:54