shock-proof hydraulic pressure gauge

 shock-proof hydraulic pressure gauge
Reading the DialThe gauge features a dual-unit display for reading pressure measurements:

• Outer Scale (Red): Measures pressure in psi (pounds per square inch), ranging from 0 to 5,800 psi. The pointer currently points near 0 psi.
• Inner Scale (Black): Measures pressure in MPa (Megapascals), ranging from 0 to 40 MPa. The current pointer reading is roughly 0 MPa. 

Key Technical Details

• Device Classification:  designed to stabilize readings under high-vibration or pulsing environments via an oil/glycerin casing fill. 
• Accuracy Grade: 2.5 (indicated by the number \(\boxed{2.5}\) inside the small circle). This means its standard error margin is within ±2.5% of the full-scale span.
• Manufacturing/Serial Markings: Displays the regulatory code 2018F641-31 alongside the manufacturer's serial tracking number № ZL25101805