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Duration:

1:27

Updated:

August 19, 2026

Ruler Tool

Add the on-screen Ruler tool to a math item so students can measure lengths during an online test.

Helpful Tips

  • Add the Ruler tool to assessment items when students need to measure graphics during online testing.
  • The ruler is a fixed size, so graphics should be resized to ensure measurements are accurate.

Adding & Testing the Ruler

  • While editing an item, check the Ruler option next to the language.
  • Resize graphics as needed by dragging the corners or outer edges.
  • Move the ruler over the image to verify measurements.
  • Use the circle on the ruler to rotate it.
  • Select Close to hide the ruler or Reset to return it to its original position.
  • Select the Ruler icon to reopen the tool.
  • Complete the question and response fields, select the correct answer, then Save.

During Online Testing

  • The Ruler icon indicates that the tool is available for the item.
  • Students select the icon to open the ruler and drag it over images to take measurements.
  • Students can rotate the ruler as needed or select Close to hide it.

Add a Ruler tool to questions when creating items in TAG.
Students can use the ruler to measure parts of a question or response when testing online.
We will begin with an already completed question.
To enable the ruler, check the box next to the language.
A ruler appears on the screen that can be used to measure graphics that are uploaded to the question or response areas.
Please note, the ruler is a fixed size.
Adjust graphics to ensure students can measure items accurately.
To resize, click on the corners and drag the outer edges of the image.
Move the ruler over images to check measurements and continue resizing, as needed.
Use the small circle to the right of the tool to rotate the ruler.
Click the close button to hide or Reset to return to its original position.
To open the ruler once closed, click on the ruler icon at the top.
Click save after completing both the question and response fields and selecting the correct answer.
On the preview screen, you can see how students will see the item when testing.
The Ruler icon is shown to indicate it is active.
For Demo purposes, let's move to an online session to view this item on a test.
Students will click the Ruler icon at the top of the screen to activate the tool and drag it over any images that need to be measured.
Click close to hide the ruler.
Select an answer to complete the question.

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