Hi all! As a rental depot for pumps for a number of years, I occasionally would like to check on the suction levels, esp. if I have a mom complain that "it doesn't work". Usually it is not the pump, but I also like to try other pumps for comparison. What I need is a vacuum gauge capable of measuring pressures up to about 300mmHg. What do you other folks who rent pumps do? I 've not been able to locate a reasonably priced gauge..... Denise Mollenkopf, RNC, IBCLC [log in to unmask]