Clinical thermometer made by G M Zeal
Object No. 87/1490D
People have long known that changes in body temperature can indicate ill health. In Italy around 1625 Santorio developed the first clinical thermometer, but it was large and slow to register, so the idea didn't catch on. In Germany in 1868 Carl Wunderlich analysed over a million body temperature readings and deduced that the normal range is 36.3 to 37.5 degrees C. Giles Henry Zeal began making his improved clinical thermometers in London in 1888, and his firm, which made this one in 1987, now also makes quick-acting digital thermometers. Debbie Rudder
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Summary
Object Statement
Clinical thermometer, made by G M Zeal, London, England, 1987
Physical Description
Clinical thermometer, made by G M Zeal, London, England, 1987
SOURCE
Credit Line
Purchased 1987
Acquisition Date
24 November 1987
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