Needed manometer in a hurry. It is very simple to use and word very well. This manometer was probably the best quality dual port manometer for the right price.
does it mesure manobar Yes and inches water column Does this come with a case? No it does not come with a case. can it measure gas furnace pressure Not quite sure about your question. It will measure natural gas and propane pressures going into and out of the furnace gas control valve. Is this meter nist certified and or calibrated ? YES