DIGITAL Refractometer… $39.99!

Baume Refractometer

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

MILWAUKEE DIGITAL REFRACTOMETER MA887 - Aquatics Unlimited

OPTi Digital Handheld Refractometer - 0-95 Brix with ATC – Refractometer Shop

Digital Salinity Meter - Modernist Pantry, LLC

Heavy Duty Salinity Refractometer for Aquarium Ocean Salt Water, Hydro – NISupply

Refractometers Homebrew Finds

, The MA887 is an optical instrument that employs the measurement of the refractive index to determine the salinity of natural and artificial

Milwaukee Digital Refractometer | Salinity Tester MA887

Heavy Duty Salinity Refractometer for Aquarium Ocean Salt Water, Hydro – NISupply

Digital Manometer LCD Display ℃ Switchable 12 Pressure Units Adjustable Indoor Measurement Tool Pipes Pressure Measuring Device