Psychrometer, an instrument for measuring the tension of aqueous vapour in the atmosphere: a wet and dry bulb Hygrometer (q.v.).
Psychrometer
Chambers's Encyclopaedia, Volume 8: Peasant to Eoumelia, p. 477
Source scan(s): p. 0486
Psychrometer, an instrument for measuring the tension of aqueous vapour in the atmosphere: a wet and dry bulb Hygrometer (q.v.).