Digital Refractometer Automatic Range 0.0 to 50.0 Diesel Exhaust Fluid (Urea) Automatic Temperature Compensation Yes Accuracy 0.1 Resolution 0.1 Function Diesel Exhaust Fluid Known As Def/Adblue/Arla/Aus32 Features (2) AAA Batteries Detachable Neck Lanyard Durable Storage Case Length 3 29/32 Width 2 1/8 Height 1.06 Includes (2) AAA Batteries Neck Lanyard Storage Case Manufacturers Warranty Length 1 yr