A selection of meteorological instruments relating to Humidity including:-
- Thermohygrographs
- Thermographs
- Aspirated Hygrometers
- Wet & Dry Hygrometers
- Dew Point Meter
- Polymeters
Softback cover, 24 pages with loose price list December 1984.
Casella London Humidity Ref:931/85 1984
£35.00Price