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1888-156|1888-156/41/9|10644833

British physician Sir William Aitken (1825-1898) designed these two thermometers. The bent one can be removed from the patient and still be read up to three minutes later. This is because a constriction above the mercury bulb prevents the mercury dropping back after the temperature has been taken. The straight thermometer must be read in situ. The clinical thermometer differs from an ordinary thermometer. It measures only over a limited temperature range relating to body temperatures. Such instruments were used in medicine for some time before 1850. However, it was only then they began being used as precise means to diagnose disease. They were also used to predict a disease’s course through recognising the different temperature patterns of specific diseases.

Object number:

A606091

 

Glossary:

Glossary: thermometer

Instruments for measuring temperature by utilizing the variation of the physical properties of substances according to their thermal states..

Glossary: clinical diagnosis

A diagnosis given based on the signs and symptoms of a disease.