The “improved- field non-achromatic terrestrial” lens arrangement of the draw tube is crucial for dating
They also relate that the Royal Lifeboat Institution (with whom Fitzroy was also associated by 1859) had similarly procured examples for their coastal stations and examples can still be found with scales relating to the RNLI or with the words
In small letters to the base
It is so simple that a child can use it
the onset of the more agile aneroid barometer put pay to the success of many of these fascinating instruments and they are therefore seldom encountered
Antique Barometers: An Illustrated Survey (2nd Edition) - Edwin Banfield Barometer for sale The “improved- field non-achromatic terrestrial”In Antique Barometers: An Illustrated Survey, second edition, the author traces the development of the English domestic barometer from the earliest mercury stick instruments, through the elegant wheel barometers of the late eighteenth century to the thoroughly portable pocket aneroids of the Victorian period. On the way, the author examines a variety of other instruments, including angle, double and multiple tube barometers, marine, sea coast and