Vee Gee 43062 Coolant/Battery Acid Refractometer; -50 to 0C, 1.10 to 1.40 SG

It's essential to know the freezing point of anti-freeze coolants for vehicular safety. Keeping a suitable concentration of coolant prevents engine trouble and possible radiator corrosion. These refractometers (available with either °F or °C ranges) monitor the freezing points of both ethylene glycol and propylene glycol; in addition, they indicate battery recharge level. Simple to use and virtually an indispensable instrument for gas stations, service shops, cab companies, etc., both models feature automatic temperature compensation (ATC); an ideal choice for testing in conditions with large ambient temperature fluctuations. Anti-freeze coolant testing/battery recharge level. Largest display available. Durable, all-metal design