All Textbook Topics - Measurement - Common measuring devices used in Physics - I can identify a set square
I can identify a set square
Set squares are used to measure right angles and to help line things up at right angles (90 degrees).
![](https://cdn.figureoutphysics.com/text/1588465990MnTcd2BWVqeGhQgkX3Yirj1IsyPS95.png)
Here you can see set squares being used in combinations with a ruler to get an accurate measurement of the width of the circular mass in the picture.
![](https://cdn.figureoutphysics.com/text/1588465991l4ukRET8qFVrgctv3bIh7LHSOGNzox.png)
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