Ruler - performs several functions: measures the length, thread pitch, converts unit of length defines a straight line that has a caliper.
Enjoy easy digital roulette on your smartphone and forget about the old methods of measurement.
Features:

• Maximum accuracy;
• a Clear and simple pattern.
• Easy operation
• set up inches, inches, millimeters, meters
• measure the length of any side of phone or tablet
• 4 mode of measurement
• calibration
• use the line in 15 languages
• There is a grid
• Horizontal and vertical length measurement.