GLSC427 Dixon Liquid Filled Stainless Case Gauge Center Back Mount 1/4″ Center Back Mount Stainless Steel 2-1/2″ Face. All of the gauges supplied by Dixon are designed for long, reliable service under rugged conditions. Typical applications include those on pumps, hydraulic and pneumatic systems, compressors, machine tools and many other installations where it is necessary to have a gauge with a non-corrosive movement. ASME B40.100, Grade B (± 3-2-3% accuracy). Figure interval: 100. Minor gradient: 10 PowerFlex movement with polyester segment, designed to resist the effects of shock, vibration and pulsation. Copper alloy bourdon tube. White aluminum dial with black numbers and black aluminum pointer. 1/4″ NPT brass connection. Glycerin filled. Polycarbonate window.