The best of the best! Precision aneroid barometers are used for measuring the absolute atmospheric pressure. Because of the excellent instrument properties, an aneroid barometer is indispensable for meteorology, ocean navigation, industry, and research.

The self-stable set of five aneroid capsules used in these precision aneroid barometers is made of a corrosion-proof copper-beryllium-alloy. This alloy has been well established for measuring the atmospheric pressure for many years because of its remarkable elastic properties. The aneroid capsules are nearly free of age-hardening, hysteresis and elastic after-effects.

The influence of temperature on the set of aneroid capsules and the transmission system is compensated for by a bimetal arm over the whole measuring range and for temperatures between -30 to +40 °C (-22 to 104 °F). The motion of the aneroid capsule is transmitted to the axle of the pointer by driving a segment and wheel with an excellent fine- finish gearing. All bearings also have an excellent fine finish. These instruments have only a bare minimum of idle friction because of the advantageous shape of the levers and bearings.

To most experts, this is one of the highest quality aneroid barometers in the world. It has been tested at sea for over 70 year and used by navies and weather services around the world. The double-needle design removes parallax error in reading it.