Expert Quality, refractometer which enables precision to be measured and calculated when evaluating anti-freeze, battery fluid and screenwash intensities. Designed to work with the new anti-freeze technology such as G11, G12 and G13. The automatic temperature compensation (ATC) delivers accurate and dependable results every time. Supplied with a calibration screwdriver, calibration fluid, pipette and cleaning cloth. Supplied with a handy storage case.