PENSON & CO. Salinity Refractometer for Aquarium, Fish Tank Seawater ATC Hydrometer Dual Scale (1.0 to 1.070 S.G.)

Measure salt water or salinity of water, ideal for aquariums and marine monitoring. 1. Product (Net) size: Length: 7.68"; Diameter: 1.57"; Weight: 4oz.; 2. Material: Aluminium; Color: Black; 3. Salini..