Several users suggest we should add camera feature to Advanced Protractor we released a few days ago and make it a paid app. So we did. It is actually quite neat. You can start the camera preview feature and the camera image will show up to cover the whole screen and the protractor is shown as an overlay on top of it. All you need to do is to align the protractor origin with the angle’s vertex and freeze the image. Then you can use finger or keypad to adjust the protractor hands to line up with the vertex’s edges. In the Pro version, we added a second protractor hand so that you use both protractor hands to measure an angle.
In order to get an accurate measurement, here are some key points.
- Always enable the second protractor hand from the settings when using camera. It is enabled by default in Pro version. If you don’t use the second hand, it is difficult to line up the origin point and one edge at the same time when you try to freeze the image.
- Make sure your phone is parallel to the angle you want to measure
- Use keypad to adjust the protractor hands, of course, only if your phone has a physical keyboard. They left/up and right/down keys will adjust the hand by -1 and 1 degree respectively. Shift+arrow key will adjust by 0.1 degree. By default, the first hand will be adjusted. If you hold Alt key at the same time, it will adjust the second hand. When you try to line up the edges, keypad will be a lot easier to use than the finger dragging.

hi,
i would like to know if with this camera pro, protractor is able to read the height of the sun/objects in degrees in a simple way.
I mean, i´m a photographer, and sometimes i need to know when the sun will be at a specific height (to know when will rise a big building, or to know the exact time for sunset if there are some hills in my horizon, or…) i just to do it with an inclinometer, but could be a comfortable advance to have it in the phone.
regards,
j
I think if you use Advanced Bubble Level Pro, it would be easier to do. Just turn on the camera, hold the phone upright, aim at the sun so that it is in the center aim scope, the y degree reading will be the degree of sun relative to the horizon.
You probably can use protractor to do it too. Put it to auto mode, long click the multi-function function so that the protractor hand pointing horizontally, then hold the phone sideway and aim the left edge of the phone at the sun (be careful, don’t hurt ur eye), the reading of the degree will be the sun degree.
I think the bubble level pro is certainly better in term of this particular task.
Great!!
That´s what i was looking for… I`ve tried the Advanced Bubble Level Pro and it is what i expected. After testing i see is accurate.
Thanks,
j
Great to know. When I made the app, I thought when enabling the camera feature in bubble level pro, the only use case is to tilt left and right. Now I knew I can tilt back and forth to use it. It proves once again that great ideas always come from the users such as you