... bronze and brass Type :PG-01 (Dry Steel Case Pressure Gauge)Application:For measurement of steam, air, oil, water and other ... ", and 4.5", 6", 8", 10",Pressure range:-30" Hg-0-10,000PSISocket:Brass bottom and back connection Connection thread:NPT ... -clamp available5) Other connection sizes available upon request. General Dry Gauge