Dwyer 475-2-FM Manometer 40 inch WC Intrinsically Safe

Dwyer 475-2-FM Manometer 40-inch WC Intrinsically Safe FM Approved measures negative, positive, and differential pressures of natural gases and air from 0 to 40.000 in w.c. The Dwyer 475-2-FM also measures air velocity when used with a pitot tube. The Dwyer 475-2-FM features durable aluminum housing, a clear display, automatic zero button, and is intrinsically safe to use in hazardous locations.