"Dry Hands" design avoids contamination of aquarium or water sampleAccurate to 0.001 specific gravity and salinity (PPT) measurementsAuto-temperature correcting designDesigned to give a temperature-corrected reading in warm water aquariums - 68°F to 85°F (20°C to 30°C)Self-leveling, hanging device included
Wide Range Specific Gravity Meter For Marine Aquarium Use. Automatically collects perfect sample size by leveling off sample at top of dam.
Brand: HIKARI, Model: 96010