This precision testing tool is designed for accurate, reliable measurement across multiple automotive and industrial fluids, providing quick, dependable results to help maintain equipment performance. Key Features and Benefits: Measures the freezing point of ethylene glycol or propylene glycolbased antifreeze with a range from 60°F to 32°F (50°C to 0°C), ensuring proper coolant performance in extreme temperatures. Reads the specific gravity of rechargeable battery acid between 1.10 and 1.40 kg/L to quickly assess battery charge condition, helping prevent unexpected battery failures. Tests the freezing point of ethanol or isopropyl alcoholbased windshield washer fluid from 40°F to 32°F, verifying readiness for cold weather operation and avoiding windshield freeze hazards. Determines urea concentration in diesel exhaust fluid (DEF) from 30% to 35% with a resolution of 0.2%, supporting compliance with emissions standards and protecting SCR system integrity. Practical Applications: Automotive maintenance shops can use the tool to quickly check coolant, battery, and DEF condition during routine service, ensuring vehicles remain reliable in all weather conditions. Fleet managers can apply it directly in field inspections to guarantee that trucks, buses, and machinery meet performance and emission requirements before longhaul trips. Home mechanics benefit from fast, accurate readings when preparing vehicles for seasonal changes or troubleshooting performance issues. Specifications: Compatibility: Ethylene glycol and propylene glycol antifreeze, leadacid battery electrolyte, ethanol or isopropylbased windshield washer fluid, diesel exhaust fluid Measurement Ranges: * Antifreeze: 60°F to 32°F (50°C to 0°C) * Battery Acid: 1.10–1.40 kg/L specific gravity * Windshield Washer Fluid: 40°F to 32°F * DEF: 30% to 35% concentration with 0.2% resolution Performance: accurate measurement for fast diagnosis and maintenance decisions Durable construction suitable for workshop, garage, or field environments Compact size for easy portability and storage This tool ensures critical fluids are within specifications, helping extend equipment life, improve safety, and prevent costly breakdowns.