Dating kennington

15-Jun-2017 18:01 by 8 Comments

Dating kennington

Weighing 500 grams, it stands just over 5.5” high, 3” wide, and there is a keyhole slot in the back making it suitable for hanging on a wall or standing on a desk/table/mantelpiece.This is an antique brass holosteric barometer & curved fahrenheit thermometer marked G. Gowland, Sunderland and engraved 'PHNB' on the reverse.

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Collectors of Negretti & Zambra instruments will recognise the extreme rarity of this box model version of the famous weather forecaster.

This example is numbered 22813/44 with the last two numbers representing 1944 as the year of manufacture.

In full working order and compensated for temperature, it's in very good cosmetic condition, with a clean dial and the only blemish being a minor edge chip on the glass (see images).

Following Georges death in 1863, the company then traded as C. Dixey & Son and the business continues to this day as one of Londons most prestigious opticians, having serviced many distinguished customers over their long history, including seven English Monarchs along with many historical figures, noteably Napoleon, the Duke of Wellington and Winston Churchill.

The barometer has a centigrade thermometer on the clean silvered dial, which is calibrated in barometric inches ranging from 27 to 32 and for altitudes to 4,000 feet.

This ingenious invention first patented in 1915 by Negretti & Zambra, is designed to accurately predict the weather in conjunction with wind direction & barometer readings, which are then set by two rotating discs, revealing a letter code corresponding to one of 26 forecasts printed on the reverse.

Whilst copies are now available, this is the genuine article carrying the Negretti & Zambra London name and patent no 6276/15. in gold lettering and likely relates to the original owner or association it was issued to, and although it has some light scuffing on the underside and missing its push button, the retaining catch is still functional and snaps shut.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..' Established by Charles Wastell Dixey & his uncle George Dixey in 1824 when they took over the failing business of William Fraser.It dates to the 1920's, and comes complete with its original instructions inside the N & Z cardboard box, which is in good sound condition. The clean silvered dial has a barometric scale ranging from 24 - 31 inches and is marked with a serial number of '2850' at the base.Measuring just 60mm in diameter & of Ivorine construction it's in excellent complete condition, and if you have a barometer you need one of these! The brass case has lost some of its laquer over the year, but is in sound condition with no dings or dents and a chip free bevelled crystal.It's that time of year again when we're all encouraged to sport our finest festive knitwear.

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