... have no effect on bronze and brassType :KP-026 (Stardand Pressure Gauge)Dial size:1.5", 2", 2.5", 3, 3.5 ... ", 4", and 4.5", 6", 8", 10",Pressure range:-30" Hg-0-10,000PSISocket:Brass bottom and back ... lens availableDial plate:Single and dual scale (psi, kpa, mpa, bar, kg/cm2) availableAccuracy:ASME B40.1 Grade B (3-2 ...