Pressure Gauge, 3 1/2" Dial, 0/100psi, 1/4" Lower Back Mount, Panel Mount U-Clamp, Dry Yet Fill... Pressure Gauge Dry Yet Fillable Gauge For Durability In Applications Where Vibration or Pulsation Is Present Stainless Steel Case And Bezel, Copper Alloy Internals Pressure Gauge Pressure Gauge