Mercury-in-glass thermometer made by Casella, London measuring in the range 20-120 degrees Fahrenheit, 1950-89. Mercury-in-glass thermometer made by Casella 1950-1989
Ordinary mercury-in-glass thermometr by Casella, London, with scale reading from 180 to 210 degrees, white-backed Ordinary mercury-in-glass thermometr by Casella
Mercury-in-glass thermometer made by Casella, London measuring in the range 20-120 degrees Centigrade, 1950-89. Mercury-in-glass thermometer made by Casella 1950-1989
Receiver Mk II for use with electrical cup anemometer. Receiver for use with electrical cup anemometer