Ruler app includes the following functions:unit converter (mm to inches, centimeters to inches), calculation of the length, straight line, calculation of area, defining the thread pitch, caliper, ruler online, etc. Ruler (tape measure) - is beautiful, functional and easy to use tool on every smartphone or tablet. Screen ruler has inflicted strokes (scale), multiple units of length (centimeter, meter, inch) used to measure the distance. - translated to Languages. Tap the screen to start using the best multi-touch measuring system and find size of all curious objects around you.