Technical SpecificationsAir PressureRange/Resolution/Accuracy ± 4000 Pascals / 1 Pascal / ± 1 % + 1 Pascal ± 16 in H2O / 0.001 in H2O / ± 1 % + 0.01 in H2O ± 400 mm H2O / 0.1 mm H2O / ± 1 % + 0.1 mm H2O ± 40 mbar / 0.01 mbar / ± 1 % + 0.01 mbar ± 0.6 ...