Two Extraordinary Altimeters, and the Trail to the British Nuclear Bomb
Aneroid, Aviation, Barometers in Action, Conservation, Featured, History of Aneroid Barometers, Pressure, Restoration, Technology | July 24, 2023
Two Extraordinary Altimeters, and the Trail to the British Nuclear Bomb
Sometimes the most obscure and almost unrecognisable objects appear, and with all the interest in Christopher Nolan’s epic docu-thriller Oppenheimer,  I decided to put pen to paper. Some years ago I was perusing an online auction and came across an instrument I recognised as a barometer or altimeter made by Negretti & Zambra. Puzzling, though, was the scale, calibrated in...
The Quest for Greater Resolution in Aneroid Barometers I
Aneroid, Barometers, Barometers in Action, Conservation, History of Aneroid Barometers, Pressure, Restoration, Surveying, Technology, Vavasseur Antiques - Antique & Vintage Aneroid Barometers, Barographs & Other Scientific Instruments | May 11, 2023
The Quest for Greater Resolution in Aneroid Barometers I
As marvellous an invention as the aneroid barometer was, it had many shortcomings, most of which were approached by various instrument makers over the 100 years or so of production. Resolution, perhaps expressed as the reading to the highest number of decimal places, was an illusive goal. The problem relates to the expansion and contraction of the cell over a...
Conservation & Restoration Services
Aneroid, Barographs, Barometers, Barometers in Action, Bourdon, Compasses, Conservation, How do I repair an aneroid barometer, Is my barometer working, Pressure, Restoration, Technology, Testing Barometers, Vavasseur Antiques - Antique & Vintage Aneroid Barometers, Barographs & Other Scientific Instruments | April 28, 2023
Conservation & Restoration Services
Barometer repairs or restoration services? We undertake barometer and barograph repairs, restoration and servicing at reasonable rates. We handle aneroid and mercury barometers, barographs, and other scientific instruments. “I had two early instruments which were ‘showing their age’ and needed rejuvenating without losing any of their original looks.  The team at Vavasseur would appear to live and breathe pocket instruments and I would recommend...
Antique Pocket Hypsometers II - Hicks Hypsometer
Aneroid, Barometers, Barometers in Action, Conservation, History of Aneroid Barometers, How do I repair an aneroid barometer, Is my barometer working, Pressure, Restoration, Testing Barometers, Vavasseur Antiques - Antique & Vintage Aneroid Barometers, Barographs & Other Scientific Instruments, Weather | April 22, 2023
Antique Pocket Hypsometers II – Hicks Hypsometer
A very  rare leather cased, lacquered and oxidised brass hypsometer No 590 by J. Hicks, London, c1900 Comprising four draw telescopic top section, the third draw marked "J. Hicks, Maker, 8, 9, & 10 Hatton Garden, London, No 590," first draw with heat shroud. Spirit burner with integral pushfit end cap, threaded wick cover, wind and flame shroud with lower...