Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation

Measure salt water or salinity of water, best for aquariums and marine monitoring.
Measures on 2 scales, Particular Gravity (D 20/20) and elements per thousand.
Options automated temperature compensation.
Comes with arduous case, dropper, screwdriver, consumer guide and cleansing fabric.
The primary half is manufactured from chromium, it is very sturdy.