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Aneroid barometer for measurement of the absolute atmospheric pressure.
Precision movement with self-stable set of five aneroid capsules made of a copper-beryllium alloy.
• Measuring range: 890 to 1050 hPa
• Measuring accuracy: ± 0.7 hPa
• Graduation: 0.5 hPa
• The aneroid capsules are nearly free of age-hardening, hysteresis, and elastic after-effects
• Temperature influence on the set of aneroid capsules and the transmission system is compensated by a bimetal over the whole measuring range and for temperatures between −30 to +40 °C (−22 … 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 of the gearing
• All bearings have an excellent fine finish
• The instruments have only a minimum of idle friction because of the advantageous shape of the levers and bearings
• Case: Chromed brass, diameter 165 mm
• Glass: Mineral glass cover, in portable wooden housing
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