Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation auspowers_batchsix the phone holder will extend

the phone holder will extend automatically by gravity

Pack of 2 pcs

it turns to yellow

PRO2150 DTR Series: DTR650

Specifications: Capacitance Model: 0

Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation auspowers_batchsix the phone holder will extendSalinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0 100 PPT with Automatic Temperature Compensation Product Features Measure salt water or salinity of water, ideal for aquariums and marine monitoring. Measures on 2 scales, Specific Gravity (D 20 20) and parts per thousand. Features automatic temperature compensation. Comes with hard case, dropper, screwdriver, user manual and cleaning cloth. The main part is made of chromium, it's