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The Herculometer is calibrated to 60°F (15.5°C).
This rugged hydrometer takes lab-accurate readings ranging from 1.000 to 1.070 SG, and is made from durable plastic rather than glass.
We offer other Herculometers to zoom-in on different gravities:
Triple Scale Hydrometer, a multi-purpose hydrometer
0.980 to 1.020 Precision Hydrometer, ideal for checking finishing gravities (FG)
1.060 to 1.130 Precision Hydrometer, for checking original gravity of big, strong beers
As with all Herculometer hydrometers, this one is made with rugged polycarbonate plastic. This Precision Scale Hydrometer takes accurate readings from 1.000 to 1.070 SG.