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
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
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
Two Miller-Casella thermometers for taking temperatures at depth at sea, broken by pressure, designed by chemist William Allen Miller in 1869 and made by Casella, London, about 1872. These thermometers were used aboard HMS Challenger on the Challenger Expedition, 1872-1876. This model is a modification of a maximum and minimum thermometer designed by James Six in 1780, adapted for use at pressure at sea. Two Miller-Casella thermometers for taking temperatures at depth at sea, used aboard HMS Challenger about 1872
Receiver Mk II for use with electrical cup anemometer. Receiver for use with electrical cup anemometer