Sykes 032010 Refractometer 3548280 HiKOKI 7300W 115mm Heavy Duty ACC_GE710PLUS HiKOKI 7300W 115mm Heavy Duty Angle Grinder w Case The Noga Dial Gauge Holder 8mm features include: This multi purpose tool s coolant AdBlue and screen wash using an optical prism technique Features internal light for use in poor light conditions Coolant – s both propylene and ethylene based anti freeze coolant solutions and determines the freezing point Battery acid – indicates the specific gravity of the battery electrolyte AdBlue – indicates % concentration of AdBlue additive Screen wash – shows the freezing point of screenwash fluids Freezing point shown in ºC