Min Max Thermometer

this thermometer is designed to determine the actual maximum and minimum temperatures for a given period of time as well as an instant gauge thermometer. the max/ min thermometer consists of a single u shape glass tube. within the glass tube are two metallised black pins held in place by a magnetic strip similar to a fridge magnet. the left column shows the minimum temperature and the right column shows the maximum temperature. the thermometer can be reset by the button located in the centre of the column. measures 22.5cm x6cm (8½in x 2½in).