Question: How Do You Change the Ruler Scale in Illustrator?
Contents Right-Click (Windows) or Control-Click (Mac) the Horizontal or Vertical Ruler and Pick a Measurement Increment from the Contextual Menu That Appears...
Right-click (Windows) or Control-click (Mac) the horizontal or vertical ruler and pick a measurement increment from the contextual menu that appears. Choose Edit→ Preferences→ Units (Windows) or Illustrator→ Preferences→ Units (Mac) to open the Preferences dialog box.
How do I change the scale in Illustrator?
To scale from the center, choose Object > Transform > Scale or double-click the Scale tool . To scale relative to a different reference point, select the Scale tool and Alt‑click (Windows) or Option‑click (Mac OS) where you want the reference point to be in the document window.
How do I use the ruler to measure in Illustrator?
To view rulers in Illustrator, choose View→Rulers→Show Rulers or press Ctrl+R (Windows) or Command+R (Mac). When the rulers appear, their default measurement setting is the point (or whichever measurement increment was last set up in the preferences). To change the ruler increment to the measurement system you prefer.