It is used on the compressor of the HVAC system 1.intergrated structure 2.made of stainless steel material 3.best quality This type product is used on the compressor of the HVAC system.Its main features is as follows:1. High accuracy and high reliability.2. Airproofed structure with high stability.3. Small volume, light weight and very convenient to use.4. It's suitable for precision measuring ...