测量工具-尺子距离测量专家 is a utility and tool application available for iPhone users. Developed by 飞剑 姚, this free app offers eight sets of small measurement tools.

The first tool is a ruler that allows users to measure the length of objects. It supports both metric and inch measurements. The second tool is a noise meter that detects the surrounding sound decibel using the phone's microphone. The third tool is a protractor that helps users measure object angles by taking pictures with the camera.

The fourth tool is a painting calibration gadget, which provides a quick view of how home pendants will look when hung neatly. The fifth tool is a distance measurement function that accurately calculates horizontal distance by inputting the height of an object.

The sixth tool is a level, which can determine whether an object is level by placing the phone on it. The seventh tool is a compass that offers fast and precise positioning, eliminating the fear of getting lost. Lastly, the eighth tool is a flashlight that can be easily accessed with a single tap.

测量工具-尺子距离测量专家 is a comprehensive collection of measurement tools, including rulers, protractors, noise meters, and distance measurements. It also provides additional features such as a level, compass, and flashlight. This app is designed to be a pocket-sized gadget that users can rely on for various measurements.

Please note that for any suggestions or feedback, users can join the QQ Group: and share their thoughts with the developer.