RadonAway Easy Read Manometer
Manometer by RadonAway.  Does NOT measure Radon. U Tube DynaMeter Manometer Vacuum Gauge Reads 0-4" W.C.  Non-Toxic Fluid. Adjustable Zero. Vinyl write-on radon system sticker included.  Includes mounting screw and peel-away sticky back for easy mounting. Includes small length of tubing for connection to PVC pipe. Compact - only 7-3/4" H x 1-1/2" W.  In many areas code requires a radon system to include a visual indicator that the system has failed or is operating properly.  This gauge is a cost effective way to meet this requirement.