richard fraser Posted May 27, 2015 Share Posted May 27, 2015 What's best method or device to interpolate proof Link to comment Share on other sites More sharing options...
patrick260z Posted May 27, 2015 Share Posted May 27, 2015 Calculators can work on the fly. TTB wants whatever method you use to be based off their manual. https://chms.ucdavis.edu/research/miller/Resources/TrueProofCalculator.xlsx is a great calculator and is based off the TTB gauging manual, but needs a correction in the formula. For the True Proof cell (C25), formula should be ...ROUND(C22,1), not ...ROUND(C21,1) Link to comment Share on other sites More sharing options...
TimeandTask Posted June 2, 2015 Share Posted June 2, 2015 For True Proof, I have typed the gauging manual and interpolate per the gauging manual's instruction. Free calculator online (scroll to the bottom) at www.whiskeysystems.com. Mobile friendly. Link to comment Share on other sites More sharing options...
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