portable coolant meter for ethylene glycol and SG measurement

The RHA-405A handheld coolant and battery fluid refractometer measures the freezing temperature (in ℃) of automotive antifreeze based on ethylene glycol or propylene glycol, as well as the specific gravity (SG) of battery fluid.   This model is commonly used in automotive maintenance and battery servicing. The instrument body is made of copper material to maximize measurement accuracy and durability. This model has Automatic Temperature Compensation (ATC). Models without ATC are also available at a lower cost.   Measurement Specifications Scale(s) Measurement Range Resolution Accuracy Ethylene  -50℃ to 0℃ 5℃ ±5℃ Propylene -50℃ to 0℃ 5℃ ±5℃ Battery Fluid 1.150 to 1.300 SG 0.01sg ±0.01sg