Dating to after 1870, the barometric scale reads from 15 to 31 inches with an altimeter scale from zero to 20000 feet, which indicates it was constructed for use at high altitudes probably by hot air Balloonists or Mountaineers.Housed in a brass case which is in very good condition, the clean frosted dial reads ‘NEGRETTI & ZAMBRA, LONDON, 13218' ’ and is housed under a clear bevelled crystal which in turn is held within the rotating bezel containing the altimeter scale.It comes with its original outer case having the Negretti & Zambra name along with the Royal Appointment crest inside the lid in gold letters.This is a rare opportunity to buy a piece of TV memorabilia with this impressive Ships bulkhead barometer signed 'John Barker & Co Ltd, Kensington' on the silvered aluminium dial, which was used as one of the props in the 5th series of Celebrity Big Brother in January 2007.It’s signed ‘NEGRETTI & ZAMBRA, LONDON’ on the faceplate with the inter-twined NZ logo and the patent no 6276/15.
This is a nice example of an antique brass pocket holosteric barometer engraved PHNB and made in the last quarter of the 19th century by the renowned French firm of Pertuis Hulot et Naudet Barometres for the English market. In full working order (it also passes the plastic bag pressure test) and measuring approximately 70mm in diameter by 28mm deep, it weighs just over 200 grams without its case.
An early 20th century compensated pocket barometer & altimeter with a distinctive black on white enamelled dial, housed in a gilded brass case retaining much of its original gilding.
Compensated for temperature, the scale is calibrated in barometric inches ranging from 23 to 31 and for altitudes to 8,000 feet.
This is a brass cased Mark IIB aneroid barometer signed 'A. The scale of pressure on the metal dial is expressed in millibars which was adopted by the Met Office in 1914 for their daily weather reports along with the inches scale until 1935, when the Mark 2 version was introduced which then omitted the scale of pressure in inches.
This example is numbered 22813/44 with the last two numbers representing 1944 as the year of manufacture.