Virtuale righello goniometro

People need protractors in some special cases. However, people do not carry protractors on their bodies in daily life.
Then what shall I do? Our team solved this problem very well.
We think about how to put the protractor in the mobile phone, so that we can measure the angle through the mobile phone without bringing the protractor every time.
Our development team achieves this through the use of software capabilities.
Our protractor is very convenient to use, just click anywhere on the screen to confirm the start of measurement, and then the mobile phone, the corresponding mobile phone screen will show the current angle.
After the user has determined the current angle, just click on the mobile screen again, and APP will automatically fix the angle at this time.
At the same time, our team has set up video tutorials in APP. Video will teach users how to use it.