The Series 476A Single Pressure Differential Pressure Digital Manometer can be used to measure low pressures from -20 to 20 in w.c. with ±1.5% FS accuracy.
The Series 478A Single Pressure Differential Pressure Digital Manometer can be used to measure positive, negative, or differential pressures. Both units are constructed of an extruded aluminum case for exceptional durability.
Features
One button auto-zero function
Auto power off function to conserve battery life
Rugged extruded aluminum housing
Instant selection of up to nine English/metric units