This optical Coolant and Battery Refractometer w/ three scales is designed to measure freezing point of coolants & antifreezes based on ethylene glycol & as well as it measures of battery fluid condition & concentration of the ethylene glycol aqueous solution. Scale range: Ethylene glycol: -60 to 0°C and 0 to 100% ; Battery fluid: 1.10 to 1.40 kg/l With this refractometer, you can:* Take care of your flooded battery* Check the strength of electrolyte solution batteries* Measure freezing point of ethylene glycol based cooling systems* Have tool that professional and nonprofessional simply can't be without Just few drops on testing prism,cover, look and read the result! COMMON FEATURES ON OUR REFRACTOMETERS:• Auto Temperature Compensation (ATC), increase accuracy & eliminates concerns on temperature• Easy to use & calibrate• Cushioned w/ soft & comfortable non-slip rubberized grip, insulate test solution from body heat• Adjustable & clearly defined scale, w/ large easy-to-read measurements• Approved by strict quality & safety standards Features: 2 scales for Ethylene glycol: -60 to 0°C (freezing Point) and 0 to 100% ; Battery fluid: 1.10 to 1.40 kg/l in 5°C ; 5% and 0.01 kg/l divisions Take care of your flooded battery and checks the strength of electrolyte solution batteries It also measures freezing point of ethylene glycol based cooling systems and the concentration of the ethylene glycol aqueous solution LIGHTWEIGHT, made with the highest and finest quality of ALUMINUM & rubber Features automatic temperature compensation (ATC) and comes with Portable USB LED Light Specifications: Measuring Range: Ethylene glycol: -60 to 0°C Ethylene glycol: 0 to 100% Battery fluid: 1.10 to 1.40 kg/l Division: Ethylene glycol: 5°C Ethylene glycol: 5% Battery fluid: 0.01 kg/l Accuracy: Ethylene glycol: ±5°C Ethylene glycol: ±5% Battery fluid: ±0.01 kg/l Reference Temperature: 20°C ATC range: 10 – 30°C Material composition: Aluminum & Rubber Item Length: 15.2cm Item weight: 92g Shipping weight: 301g Shipping size: 21 x 9 x 6cm Set Includes: 1 x Traditional Battery Antifreeze Cleaning Fluid Refractometer 1 x English Instruction manual 1 x Mini screw driver 1 x Cleaning Cloth 2 x Pipettes 1 x Portable USB LED Light (Power Bank not included in set) 1 x Protective Carrying Case