- Auto Air Conditioning Pressure Gauge for R12, R22, R404 Maintenance: Enhance your HVAC service with this precision tool designed specifically for automotive air conditioning systems. - Comprehensive Diagnostic Display: Features an extra-large window for easy reading, clearly showing temperature in Celsius. This ensures accurate measurements for R134, R12, R22, and R404 systems, making diagnostics straightforward and reliable. - Durable and Reliable Construction: Crafted from solid brass, aluminum, PVC, and plastic, this gauge is built to last. The membrane valve with rotary seal guarantees a secure fit and minimizes wear, making it ideal for professional mechanics. - User-Friendly and Protective Design: The rubber gauge cover provides support and protection, while the rear hook keeps the manifold gauge in place during use. The 1/4 inch size ensures compatibility with a range of air conditioning systems. - Practical Applications: Perfect for automotive technicians conducting routine maintenance, troubleshooting leaks, or recharging refrigerant in vehicles. Ideal for both professional workshops and DIY enthusiasts looking to maintain their car's air conditioning system effectively. - Key Attributes: - Function: Measures pressure and temperature for accurate diagnostics - Compatibility: Works with R12, R22, R404, and R134 systems - Size: 1/4 inch for versatile use - Material: Heavy-duty construction ensures longevity - Performance: Reliable readings for efficient system maintenance This pressure gauge is an essential tool for anyone serious about air conditioning maintenance and repair.