Charts for Thermohygrograph
Recording charts for Thermohygrograph
Thermohygrograph, 1986. (Bimetallic Thermometer, Hair Hygrometer) in plastic case, 30 x 20 x 20cm. (Casella Product No. T 9184/C/MK 2) by Casella (London) Ltd, London, England, 1986.
Recording charts for Thermohygrograph