Millimeter Pro - screen ruler v2.3.4

The Millimeter app is an Android screen ruler. The app uses Android's full-screen to measure distance and length as it would a tape or caliper. To measure an item, place it on the screen of scale paper and use rulers by touching and moving them. Check features for more details. The Pro version is a powerful tool that measures circle radius, area and circumference, as well as angle and ratio.

In Calibration Mode any device can be calibrated to ensure accurate measurements. Standard objects such as coins, credit cards and so on can be used for reference.

You can calibrate the millimeter using standard or custom objects
Measure in imperial and metric units with the ruler mode: mm or inch
Please use fractions when converting between inch and metric units
You can use the app like a ruler
You can use full screen mode to get a better experience when using Ruler mode
Vertical ruler with additional vertical for 2D measurement
The area measurement is for 2D measures
The W/H Ratio of Rectangular Objects in 2D
Split length in equal parts using the Parts mode
Thread per inch (TPI) measurement pattern in Parts mode (https://youtu.be/M1Qrbs2bgCY)

Use a spirit/bubble gauge to check the tilt or incline angle
Measure circular objects with the Circle Mode
Split circle into equal sectors
Angles can be measured using the Protractor/Goniometer mode.
The rulers can be locked or unlocked in any position for improved usability
Keyboard input allows you to manually set the exact dimensions, such as length, width, and number of pieces.
Use BW Night Mode to save power and improve visualization
Turn on/off the fine grid (millimeters)
You can read interactive help / guide about the features available in each mode.

This screen ruler is useful for measuring small items that are compatible with your screen, such as jewelry, beads and buttons, nuts, washers and screws, knitting patterns, insects and hooks.

The units are millimeters (mm) and inches (in). For inch units, fractions can be used.

Supported languages
German, Russian and Japanese