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Ebony thermometer with ivory face, scales for Fahrenheit and Reaumur, marked Dolland, London, p…

Currency:USD Category:Everything Else / Other Start Price:NA Estimated At:250.00 - 500.00 USD
Ebony thermometer with ivory face, scales for Fahrenheit and Reaumur, marked Dolland, London, p…
Ebony thermometer with ivory face, scales for Fahrenheit and Reaumur, marked "Dolland, London," probably 19th century, 5-1/2 in. Some numbers faded., Reaumur scale invented in 1730, zero is freezing and 80 degrees is boiling.