1、High quality material can make sure the durability and stability of the refractometer 2、The tester can test measure Ethylene Glycol,Propylene Glycol,Cleaning Fluids and Battery Fluids 3、Professional design and reasonable structure, the compact appearance can make it easier to operate 4、There is a carry case which you can store and convenient to carry, simple to use 5、The test head has a transparent cover which can protect the measuring part from damage Specifications: Item Type: Antifreeze Refractometer Model: RHA-503ATC Weight: 230 g / 8.1 oz(approx.) Reference Temperature: 20℃ Measuring Range: Ethylene Glycol: -50℃-0℃ Propylene Glycol: -50℃-0℃ Cleaning Fluids: -40℃-0℃ Battery Fluids: 1.100-1.400sg Resolution Factor: Ethylene Glycol: 5℃ Propylene Glycol: 5℃ Cleaning Fluids: 10℃ Battery Fluids: 0.01sg Package Included: 1 x Antifreeze Fluids Refractometer 1 x Mini-Screw Driver 1 x Pipette 1 x Cleaning Cloth 1 x Carrying Case