Thomas Alcohol Proof Hydrometer, 0 - 20 percent Proof, 305mm Length
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<b>[Product Information]</b><br>
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<li>Determines proof of ethyl alcohol spirits</li>
<li>Hydrometers are calibrated for proof at 60 degree F</li>
<li>Hydrometers are made according to bureau of Internal revenue, and U.S. treasury department standards</li>
<li>Hydrometers are single units</li>
<li>305mm Long; 0.2 degree division</li>
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