The RNLI at 200
Aneroid, Barometers, Barometers in Action, History of Aneroid Barometers, Marine, Weather | March 4, 2024
The RNLI at 200
A national lifeboat service was the vision of Sir William Hillary, a resident of the Isle of Man, who wanted to the reduce the death toll from the 1,800 shipwrecks annually around the British Isles at the time. He convinced a group of influential people in the City of London to take notice and the Royal National Institution for the...
Mark and Vavasseur Antiques Featured in Country Life!
Aneroid, Aviation, Barographs, Barometers, Barometers in Action, Conservation, Featured, History of Aneroid Barometers, Interior, Media Mentions, Pressure, Restoration, Vavasseur Antiques - Antique & Vintage Aneroid Barometers, Barographs & Other Scientific Instruments, Weather | September 28, 2023
Mark and Vavasseur Antiques Featured in Country Life!
Credit: Country Life, 27 September 2023 Issue www.countrylife.co.uk
Hysteresis and the Watkin Hicks Mountain Barometer
Aneroid, Barometers, Barometers in Action, History of Aneroid Barometers, How do I repair an aneroid barometer, Is my barometer working, Pressure, Surveying, Technology, Testing Barometers, Vavasseur Antiques - Antique & Vintage Aneroid Barometers, Barographs & Other Scientific Instruments, Weather | August 28, 2023
Hysteresis and the Watkin Hicks Mountain Barometer
This scarce development of the aneroid barometer or altimeter, patented by Colonel H.S.S. Watkin in 1898, was born of poorly performing pressure sensing capsules. It had been known for some time that a first reading before an ascent of some high place would not agree once the observer returned to the same elevation even if the barometric pressure had not...
August Work in Progress
Aneroid, Barographs, Barometers, Conservation, History of Aneroid Barometers, How do I repair an aneroid barometer, Pressure, Restoration, Vavasseur Antiques - Antique & Vintage Aneroid Barometers, Barographs & Other Scientific Instruments, Weather | August 8, 2023
August Work in Progress
Another fine instrument of particular interest, this large barograph is something quite special, and although unsigned, is undoubtedly the work of Negretti & Zambra. Let’s examine the evidence for this. First, the instrument is listed in the Negretti & Zambra catalogue of 1910 in the section Self-Recording Aneroid Barometers: item 82, a “Self-Recording Barometer, with a tall cylinder taking a...