This is the license to the pro version of Compression Calculator. The pro version allows you to save and load your own custom configurations and see how the changes you make affect the compression ratio. You must install both this license app, and the free version of Compression Calculator to unlock the pro features. Compression Calculator is a very detailed and accurate compression ratio calculator. It will also calculate the quench distance and total engine displacement for you. You will
have to know a lot about the parts you are using in your engine, but you will get the most accurate answer. Supports both metric and standard measurements as input.
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