>>> Features:

A floating ruler that you can drag it everywhere.

Measure the real objects outside the screen (CM and Inches).

Measure the virtual objects inside the screen (Pixels and Dots). It is very useful for UI/UE designer.

Switch between centimeters and inches easily.

Calibrate this ruler precisely and easily.

Change the color of ruler.

Set vertical or horizontal ruler.

And more will be added soon.

VISA only!


>>> Known Issue:

Android 6.0, Settings - Apps - Configure apps (Settings Icon at the Upper-Right corner) - Draw over other apps - This app (On-screen Ruler) - Permit drawing over other apps
https://www.youtube.com/watch?v=H6Z-LXLCGKo

How to enable floating app "On-screen Ruler" on XiaoMi/MI/MIUI devices:
https://www.youtube.com/watch?v=W6pLnvOCgEY

How to enable floating app "On-screen Ruler" on Huawei devices:
https://www.youtube.com/watch?v=e3jF-0NXqZk

Step 1. Download On-screen Ruler (Pro) Mod (Paid for free Free purchase) APK file on HappyMod.com.
Step 2. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted.
Step 3.On-screen Ruler (Pro) Mod (Paid for free Free purchase) APK will begin installing on your device. Simple.

Step 1. Download HappyMod APK file on HappyMod.com.
Step 2. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted.
Step 3.Search On-screen Ruler (Pro) Mod, click Download.
Step 4: You can download 100% working mods on HappyMod with one click.