Place of Origin: Anhui, China (Mainland) Brand Name: OEM or Exact Model Number: 111AV Product Name: pressure gauge with front flange Material: Black Steel Case Brass Internal Pressure range: Equivalent Pressure Unit Accuracy: 1.6% Mounting: Panel Certification: ISO9001 Connection thread: M20*1.5 G1/4 G1/2 NPT1/2 NPT1/4 Size: 1.5"2"2.5"4"6" Window: Acrylic Case: Painted Steel Product Name: Black Steel Case Pressure Gauge With Front Flange Normal Size: 1.5"(40mm),2.0"(50mm),2.5"(63mm),3"(75mm),4"(100mm),6"(150mm). Pressure Range: -1Bar(-30"Hg)-0-1000Bar(15000Psi) Accuracy: ±1%,±1.6% Operating temperature: -20°C to +60°C Case: steel Bezel: steel Bourdon tube: Copper alloy or Stainless steel