MEASUREMAN 3-1/8" AC Compound Gauge, Single Low Side Refrigeration Gauge for R410A, R22, R404A, R134a, 30inHg-500PSI with 12-Inch Blue Hose & 1/4" SAE Fitting

Engineered for the professional HVAC technician, this series of refrigeration gauges provides the accuracy and durability needed for servicing a wide range of AC systems. With clear scales for the most common refrigerants—R-410A, R-22, R-404A, and R-134a—these tools are versatile and essential additions to any toolkit. Each gauge features a large, easy-to-read 3-1/8” dial housed in a rugged steel case with a shatter-resistant polycarbonate lens. Inside, the precision copper movement delivers Class 1.6 accuracy, ensuring you get reliable readings you can trust. Designed for demanding field use, a flutter-free pointer resists vibration for stable measurements, while an external adjustment screw allows for quick on-the-fly calibration. Whether you are equipping your workshop with a complete 2-way manifold set or need a reliable single gauge for a specific task, each unit comes complete with a 12-inch, 800 PSI rated service hose with standard 1/4" SAE fittings, making it ready for the job right out of the box.

• Pro Low-Side Gauge: For testing and charging AC systems using R410A, R22, R404A, & R134a.
• Accurate & Easy-to-Read: Large 3-1/8" blue dial with a -30inHg-500 PSI scale and Over Pressure zone. Class 1.6 accuracy for reliable diagnostics.
• Built to Last: Features a rugged steel case, polycarbonate lens, copper internals, and a flutter-free pointer for stable readings and field-ready durability.
• Simple Calibration: An external adjustment screw allows for quick and easy fine-tuning to ensure maximum accuracy.
• Includes 12" Blue Hose: Comes with a 12-inch, 800 PSI working / 4000 PSI burst hose with standard 1/4" SAE fittings.