NEGRETTI
& ZAMBRA - LONDON
Rare and fine quality
19th Century brass-cased ‘Mountain’
or Surveyors’ Stick Barometer in essentially
original condition. The slender cylindrical
brass case with suspension loop to the top and
extended Imperial scale reading from 32 down
to 14.5 inches (allowing operation up to approx.
18,000 feet). Unusual manually operated vernier
over trunk bearing Fahrenheit mercury thermometer,
The trunk signed by the makers with the added
notation: “Instrument Makers to Her Majesty”.
Original tripod stand with loop mount. The concealed
cistern tube terminating in typical exposed
Fortin reservoir [allowing higher accuracy of
readings]. Complete with original cylindrical
leather carrying case, which is in excellent
condition apart from some damage to the carrying
strap.
c1860
The most renowned meteorological instrument
makers of the 19th and 20th Centuries
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