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...