Proof and Tralle Hydrometer

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Hydrometer for testing alcohol levels in distilled spirits. Will only work in solutions of ethanol and water, will not read the alcohol levels of beer or wine. Reads alcohol percen tage on scale of 0-100%, and "Tralle's scale" (Proof) on a scale of 0-200. Specs: Range: 0-200 / 0-100 Unit: Proof/Tralles Div.: 1 Accuracy: ± 2 Calibration temp.: 60°F Length: 11.4" (290mm) Show more