Hydrometer with Liquid Crystal Thermometer 1.010 to 1.030 specif

User-friendly integrated design combines a hydrometer with a thermometerEasy-to-read liquid crystal thermometerUse for continuous or periodic measurement of specific gravity-->Versatile swing-arm hydrometer accurately measures both specific gravity and water temperature. Clever design allows periodic or continuous reading of the most important water quality parameter in saltwater aquariums. Measure from 1.010 to 1.030 specific gravity and 64-97F.Please click on "More Information" for directions, specific gravity conversion charts, and salinity information.