Hydrometers

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Hydrometer w/ Temperature Indicator
Hydrometer w/ Temperature Indicator
Provides real time measures of specific gravity and temperature.
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$9.99
Instant Ocean Hydrometer
On Sale!
Instant Ocean Hydrometer
Shows both salinity and specific gravity.
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$8.99 $7.99
Deep Six Hydrometer
Deep Six Hydrometer
Takes true water sample at a 6" depth.
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$7.79
Glass Hydrometer
Glass Hydrometer
8" glass hydrometer with built-in thermometer.
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$4.99
Salinity Refractometer
Salinity Refractometer
Optical device requiring no batteries.
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$89.99
 
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