AllPoints ALL721134 Electronic Manometer

ELECTRONIC MANOMETER;It replaces your fragile and messy U-TUBES. Simply turn the;instrument on by pressing the power button and press and;hold the zero button for approx. 4 seconds. Connect the;provided tubing and you are immediately receiving;continuous pressure measurement from -20" to +20" water;gauge, with resolution as good as 0.05".;This affordable instrument provides a large LCD display and;comes complete with a protective rubber boot with integral;magnet, one 9V battery and tubing with fitting.