Fischer Barograph for Ships 287M

Measuring element:

• Set of 7 aneroid capsules, Ø 62 mm, made of copper-beryllium alloy

• The alloy offers outstanding elastic properties and has been tested for reliability over many years

• Age-hardening, hysteresis, and elastic after-effects are practically eliminated

• Temperature influence on the capsules and transmission system is compensated by a bimetal across the full measuring range and for temperatures between −30 and +40 °C (−22 … 104 °F)

Mechanism:

• All axles of the precision instrument are jewel-mounted to minimize idle friction

• Parts of the measuring mechanism are made of polished brass

• Mechanical winding clockwork, instantly switchable for daily or weekly revolution

• Periods: 25.6 h / 176 h

Case:

• Mahogany colored wooden case

• Dimensions: 345 × 170 × 180 mm

Accessories included:

• Fibre pen

• Set of 60 diagram papers for weekly revolution (sufficient for one year)

Additional information:

• Field of use: Indoors

• Colour: 22 – mahogany coloured

• Material: Brass, wood

• Measuring accuracy (barograph): ± 0.7 hPa