The application contains two useful tools: Screen Ruler and Bubble Level. These are free, handy, accurate, simple to use and incredibly useful tools for your Android phone and tablet devices.

Bubble level also known as Spirit level, Water level. The bubble level is useful in construction, carpentry and photography, home decoration, object alignment, positioning and installation.

Screen ruler can help you to measure the dimension of anything you need in the range of screen size of your Android device. Also you can start using caliper by simply put the target object on the device's screen and move the line limiters to align with the object's boundaries. The measurement value of the object will be displayed on the screen automatically.

Calibrate your ruler with a real ruler to achieve the best precision in your measurements.

Ruler and Level Tools Features:
✔ Horizontal and Vertical Spirit Levels
✔ Smooth Spirit Level Movements
✔ Multi-Touch Caliper Mode
✔ Imperial (inch) and Metric (centimeter/millimeter) Ruler Units
✔ Adjustable Thickness of Ruler Divisions
✔ Quick Calibration
✔ Day and Night mode
✔ Enable or Disable Sound
✔ Save Measurements for Future Use (in PRO version)
✔ Nice Graphics

This application can be useful for pupils, students, workers of different specialties, such as carpenters, stonemasons, bricklayers and other building trade workers, surveyors and metalworkers.

Ruler and Level Tools application is free, and it's using advertising inside. You can always remove Ad, for minimum charge, pushing the "Remove Ad" in Settings.