103PM | Precision aneroid barometer
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.
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 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 got a minimum of idle friction because of the advantageous shape of the levers and bearings.Case in polished or chromed brass, diameter 165 mm. Mineral glass cover."Fischer aneroid from Germany, with a 5.5" dial and a 5-cell movement is among the best of the aneroids available today. This instrument has an accuracy of better than +|-0.7 mb over its full working range of 890 to 1050 mb. Fischer aneroids have been used at sea for 60 years."
- Measuring range 890 to 1050 hPa
- Accuracy ± 0.7 hPa
- Graduation 0.5 hPa
David F. Burch, PhD, Director of the Starpath School of Navigation Seattle USA
Belongs to design line › Nautic