The Dwyer 1221 series is a basic U-Tube gage that withstands hard use and provides accurate, high visibility readings. For use with water, mercury or red gage fluid and is designed to measure positive, negative and differential pressures and combine the inherent accuracy of the simple "U" Tube with the durability of tough, flexible and shatter proof clear butyrate tubing.
- Range: 150 - 150 MM of Water
- Maximum Pressure: 100 psi