Dwyer Series 477 Handheld Digital Manometer High Volume Air Samplers MSI™ confirms when a reading

MSI™ confirms when a reading is stable by turning the thickness measurement numbers from red to yellow

silica gel and so on

Electronic zeroing means you simply touch a single key to perfectly null out any minor pressure differences

the Model GA-52Cx is so rugged and dependable it's backed by a 7-year warranty and the Model GA-72Cd is backed by a 5-year warranty

Recalibration prompts

Dwyer Series 477 Handheld Digital Manometer High Volume Air Samplers MSI™ confirms when a readingSeries 477 Handheld Digital Manometers are packed with features you need to make low pressure measurement and recording faster, easier and more accurate than ever. First, you can instantly select from up to nine of the most widely used pressure units without having to waste time and risk mistakes with tedious conversions. Next, a non volatile memory function enables storage of up to 40 readings perfect for HVAC technicians making Pitot tube traverses