I can't understand why this type of hydrometer has not completely replaced the glass tube hydrometers. The temperature is automatically compensated, easy to read, the glass float does not stick to the side of the glass tube which can cause reading errors, the accuracy seems to match the accuracy of a quality glass tube hydrometer if done right, well done. It's expensive, and glass tubes are very cheap, but really comfortable to use. I trust the readings of this glass tube hydrometer.
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