The Forney 75565 0-160 PSI 1-1/2-inch air line pressure gauge with rear mount 1/8-inch NPT is not suitable for liquids or other gases. Forney Industries is one of Americas longest operating family-owned metal working product companies. Founded in 1932, Forney offers more than 5,000 products for the hardware, automotive, farm and ranch and do-it-yourself markets. If you've got metal working questions, we've got answers. Were committed to your success regardless of location size or needs. 0-160 PSI 1-1/2-inch (38.1mm) air line pressure gauge with rear mount 1/8-inch (3.175mm) NPT. Proof of purchase required. neglect, negligence or accident, or that has been used in any way contrary to the purpose intended.