A Coventry Absorption Hygrometer.
Coventry absorption hygrometer, by George Adams, the Younger, London, England, 1790
Coventry absorption hygrometer and spare paper discs, by George Adams, the Younger, London, England, 1790
Coventry absorption hygrometer, by George Adams, the Younger, London, England, 1790
Stand for a coventry absorption hygrometer, by George Adams, the Younger, London, England, 1790
Needle elements and paper discs for a coventry absorption hygrometer, by George Adams, the Younger, London, England, 1790.
Paper discs from coventry absorption hygrometer, by George Adams, the Younger, London, England, 1790