Category: Surveying

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...
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...