For measurements in a wide environmental pressure and temperature range. High accuracy - class A barometers have a total accuracy of ±0.15 hPa and class B barometers ±0.25 hPa. Optional display can simultaneously show the barometric pressure, the three-hour pressure trend and the WMO pressure tendency code. Available with an analog output option. Ideal for use e.g. ship barometer, transfer standard or replacement for mercury barometers.