Gammon API Gravity Calculator

App does exactly what you would imagine it would. Keeps you from having to read the god forsaken wheel. However, it is worth noting that it is off by .1. This is a consistent difference with every reading so I cannot say it is inaccurate. With the API wheel and the app being developed both by Gammon, it is hard to say which is technically correct. But either way, the jet fuel passes.

Great app. I recommended it to many fuel receivers at airports.

Good except not getting the full number. Only see half of a 5 or 7 for example