Digital Refractometer Hand-Held Range 0 Percent to 95 Percent Automatic Temperature Compensation Yes Accuracy +/-0.2 Resolution 0.1 Function Measures Ethylene Glycol (EG) Freeze Point Ethylene Glycol (EG) Boiling Point Ethylene Glycol (EG) Percent Concentration Length 3 29/32 in Width 2 7/64 in Height 1.1094 in Includes (2) AAA Batteries Holster Case Manufacturers Warranty Length 1 yr