Changing the margins in a Google Doc can be useful for stylistic purposes and to fit more on the page.

With the rulers enabled in the print or draft layout, you can change the margins and tabs. This article explains how to display the ruler in Microsoft Word—and how to use the ruler to change margins ...

You can make a hanging indent in Google Docs using the ruler tool, which lets you change the margin size.

If you use rulers on a daily basis or need to upgrade your existing measuring stick, you might be interested in the T3 scale aluminum metal ruler set which comprises of three rulers that combine to ...