Range 0-100salinity; 1.000-1.070SG Accuracy 0.1%Salinity; 0.001SG Material Option (1)Aluminum Alloy; (2)Copper Body Size of refractometer 30x40x205mm Size of Case 21x6x5cm After Sales Service 1. Your inquiry and e-mai will be replied within 12 hours. 2. If you need to ...