Thanks, Clyde. I know that this measurement is done at every Form Two inspection where you live.

Until this app, the device was a mark one eyeball, and counting "one, two, three, (etc) while looking at some cheap watch. Then doing it again because you're sure you lost count! The last bit probably won't change until you believe the app can count.
Jim


On Saturday, March 5, 2016 at 6:01:24 PM UTC-8, IA DPE wrote:
In order for this to be recorded in the aircraft logbook, it would have to be a FAA approved measuring device, right?

While I can see some value in knowing this reading, there would have to be standardization in the measuring device and technique I would think.