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(e.g. air conditioners and cold storage). AUTOOL LM110 Digital Refrigeration Manifold HVAC Vacuum Pressure Temp Air Conditioning Tester. The level of the refrigerant can be observed through a viewing window.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.