Thermohygrograph in brass case made by A. Gallenkamp and Co. Ltd., London, c. 1900-1950, used to record humidity and temperature in the laboratory at the Horlicks Factory in Slough. Thermohygrograph in brass case made by A. Gallenkamp and Co. Ltd. 1900-1950
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. Thermohygrograph, 1986 1986
Thermohygrograph by F. Darton and Co. Ltd., Watford, England, 1957 Thermohygrograph by F. Darton and Co. Ltd. 1957
Thermohygrograph made by Cole-Palmer, c. 1940-1970, used to record humidity and temperature in the laboratory at the Horlicks Factory in Slough. Thermohygrograph used in the Horlicks factory laboratory 1940-1970