The American Granby 1/8" MPT Lower Pressure Gauge - Steel Case features rugged precision made phosphor-bronze Bourdon tube movements assuing maximum accuracy (+/- 3-2-3%) under adverse field conditions. These pressure gauges are to be used with air or water only. This pressure gauge also features a deep drawn one piece steel housing that encases a quality movement and genuine mar-resistant glass lens and brass socket connections. Range: 0-60 lbs. Dial Size: 2".