Use APKPure App
Get Ruler old version APK for Android
Ruler (AD-FREE)
If you don't have a ruler in your app, download this one now! It's simple but useful. You may never think of having a ruler in your phone. But you will find it necessary and irreplaceable. (AD-FREE)
How to use:
Open the app and place it on the device screen or just next to it. By moving each line limiter one after another you can get the most accurate measurement.
Features:
-Displays fractions for inches, decimals for centimeters;
-Support proof checking and help you get the most accurate value;