Based on the iPhone's various sensors, it will play its strengths and carefully support the measurement toolbox, instantly turning the iPhone into a surveying expert. Make use of the latest AR technology for augmented reality measurements. Features include: * AR Ruler * Measurement of length and distance * Height measurement * HD mirror * Decibel meter * Protractor * Level meter * Compass * Tester * Barometer * Altimeter * Mural correction * Flashlight (brightness / strobe) Measurement Tools - Really a commonly used gadget in your pocket.