Solar thermometer
- Made:
- 1940-1950
Solar thermometer, sheathed maximum thermometer with blackened bulb, marked Negretti and Zambra, London, DO 2236, scale from -5 degrees C to 95 degrees C
Solar thermometer, sheathed maximum thermometer with blackened bulb, marked Negretti and Zambra, London, DO 2236, scale from -5 degrees C to 95 degrees C