• Manometer measures positive, negative (vacuum) and differential pressures.  Simple to install and provides an accurate readout
  • Includes 3/4 fld oz of red gauge oil, pair of spare plugs, pair of non-kink tube connectors and instructions
  • Reads up to 8" of Water Column 
  • *Also see RCI's MU-93 Mini "U" Tube
  • Click Here for Manufacturers Operating Instructions (see Model 1221)
  • Click Here for MSDS Sheet regarding the red gauge oil