... For measurement of steam, air, oil, water and other pressure media, which 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 ... U-clamp available5) Other connection sizes available upon request. STANDARD PRESSURE GAUGE