About Gammon API Gravity Calculator
The GTP API Gravity Calculator from Gammon Technical Products, Inc. provides users the ability to determine corrected API at 60 Deg F for jet, gasoline, and diesel fuels. The calculator is a digital version of our...
The GTP API Gravity Calculator from Gammon Technical Products, Inc. provides users the ability to determine corrected API at 60 Deg F for jet, gasoline, and diesel fuels. The calculator is a digital version of our GTP-3012-1A and GTP-2727EF slide calculators and it also is capable of calculating the total weight of the fuel.
Previous Versions
Here you can find the changelog of Gammon API Gravity Calculator since it was posted on our website on 2017-01-04 22:26:40.
The latest version is and it was updated on 2026-06-10 10:00:05. See below the changes in each version.
Gammon API Gravity Calculator version -
Updated At: 2026-06-10
Gammon API Gravity Calculator version 1.0
Updated At: 2016-10-28
Changes: Oct 28, 2016 Version 1.0
This app has been updated by Apple to display the Apple Watch app icon.
Gammon API Gravity Calculator version 1.0
Updated At: 2016-10-28
Changes: Oct 28, 2016 Version 1.0
This app has been updated by Apple to use the latest Apple signing certificate.
Disclaimer
Official App Store Link
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