Manifold Gauge Set for Refrigeration Equipment The refrigeration gauges are dedicated to installing, testing, and maintaining refrigeration equipment such as air conditioners, refrigerators, and cold storage. The 2 temperature clamps in the manifold gauge set have strong corrosion resistance and tightness, and will not easily break. The refrigerant gauge is also equipped with 3 standard test hoses (1.5m) and a portable toolbox, which is convenient for the storage and carrying of the meter.