Tag: Negretti & Zambra

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...
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...
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...
March Work in Progress
Aneroid, Barographs, Barometers, Bourdon, Conservation, History of Aneroid Barometers, Pressure, Restoration, Vavasseur Antiques - Antique & Vintage Aneroid Barometers, Barographs & Other Scientific Instruments, Weather | March 31, 2023
March Work in Progress
Another fascinating instrument from the storeroom, and at last I can give it the attention it needs. This Negretti & Zambra barothermograph was absolutely filthy, caked in dust and grime, and working to a point but not much more. Nonetheless, I could see that this would come good with careful conservation techniques. I always start a project like this by...
February Work in Progress
Aneroid, Barographs, Barometers, Barometers in Action, Compasses, 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 | February 16, 2023
February Work in Progress
Many might wonder what might be next on Vavasseur Antiques. “Work in progress” is a constant state, since almost all the items we offer are comprehensively re-built, serviced, and/or benefit from conservation. Consequently through-put is sometimes slow. This does mean though that the things we offer are ‘proper,’ as described, and as original as possible, not the product of the...
Testing Aneroid Barometers for Accuracy & Function
Vavasseur Antiques - Antique & Vintage Aneroid Barometers, Barographs & Other Scientific Instruments | August 23, 2019
Testing Aneroid Barometers for Accuracy & Function
Aneroid barometers that have not been properly serviced and calibrated may be prone to one or more of the many common faults that are found and the oft-cited Plastic Bag Text is fallible. Buying an instrument that has not been properly checked is therefore a lottery.
Negretti & Zambra Barograph & Thermograph Instructions
Barographs, Barometers in Action, Weather | October 1, 2018
Negretti & Zambra Barograph & Thermograph Instructions
An original Negretti & Zambra leaflet c1910 with directions for setting up self-recording barometers (barographs), thermometers (thermographs), etc