Ruler 4.0 Apk

This is an virtual ruler that can be adjusted to an actual size
It is a mini tapeline app and scale ruler app.
You can measure any object with red line using this app.
Measure length in millimeters(mm) and inches!
Before you use it, please set the real inch or millimeter to your own device.
You can calibrate a ruler using calibration button on right side down.