FEATURES  Reliable, small diameter, low profile gauge 1" (25mm) to 1.5" (40mm) sizes 1/8”NPT Socket Direct drive (no linkages or hairsprings) eliminating premature failure from   the gear and movement Safety over-pressure port on the lens "Use No Oil" for use in oxygen service CRN registered UL Listed for 1.25” and 1.5” gauges 2 year warranty   APPLICATIONS  Commonly used on portable pneumatic equipment such as compressors,hand-held sprayers, pressurized recreational guns, oxygen tanks andregulators, pumps and fire extinguishers