Stainless Steel Case Liquid-Filled Pressure Gauges will not vibrate the needle off! This Pressure Gauges Scale has Measurement Ranges: 0-160 Dial Diameter: 1-1/2 Mount: Back Accuracy (%): ±2.00 Type: Pressure Gauges Scale Measurement Ranges: 0-160 Dial Diameter (Inch): 1-1/2 Mount: Back Accuracy (%): ±2.00 Material Grade: 18-8 Case Material: Stainless Steel