Question

use of six's maximum and minimum thermometer

Answer 1

Six's thermometer is a registering thermometer which can record the maximum and minimum temperatures reached over a period of time, for example 24 hours. It is used to record the extremes of temperature at a location, for instance in meteorology and horticulture. It was invented by Englishman James Six in 1782; the same basic design remains in use. It is also commonly known as a maximum-minimum, minimum-maximum, maxima-minima or minima-maxima thermometer, of which it is the earliest practical design. The thermometer indicates the current temperature, and the highest and lowest temperatures since last reset