Take a measurement if all you have available is a cell phone.
The other day, I wanted to take a measurement of some rubber pads that are screwed into the underside of a portable set of bleachers in the gymnasium of my church. I did not have a tape measure and so I did the next best thing and took the picture attached to this message.
Ideally, I would like to find an app, that will allow me to get an accurate measurement when all I have with me is a cell phone.
I have tested several apps in the past and so far haven't identified anything that really works, so some assistance here is greatly appreciated.