Maximum and Minimum Thermometers

Maximum and Minimum Thermometers

A maximum–minimum thermometer.
The scales are Fahrenheit on the inside of the U and Celsius on the outside.
Ranges Available: -30ºC to +50ºC
The current temperature is 23 degrees Celsius, the maximum recorded is 25, and the minimum is 15, both read from the base of the small markers in each arm of the U tube.