An antique medical thermometer in a brass case by G. H, Zeal of London, dating from the early 20th century. The thermometer is 30cm (12") in length and the case 33cm (13"), graduated from 0-60 Fahrenheit and marked 'C1456' as well as 'G. H. Zeal'. The thermometer case allows the gauge to be viewed when the thermometer is stored.

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