Fast, accurate pressure measurements at moderate cost. Combines modern, solid state integrated circuit electronics with the time proven point gage manometer. Delivers repeatable accuracy in measuring positive, negative or differential pressures to ±.00025" water column over a 0 to 2" w.c. range. Metric model M1430 reads from 0-50 mm w.c. Calibrates other instruments. Provides high precision for test laboratories of manufacturers of fans, air conditioning and heating equipment, pneumatic or fluidic controls, etc. Used in college, university and consultant laboratories — wherever precision measurements are required. Used with pitot tube (at extra cost) for precision measurement of low air velocities. Measures positive, negative or differential pressures to 2.0" w.c. Easy to maintain and clean. Battery replacement and instrument cleaning are quick and simple-use mild soap and water. Indicating fluid consists of distilled water and a small amount of Dwyer® A-126 Fluorescein green color concentrate. Max. press. 100 psig (6.89 bar).