A 19th century M Pillischer ivory encased small, thermometer the scales in Fahrenheit and Reaumur. verso M. Pillischer. Optician 88 new Bond St. London. Known to have described himself as 'Barometer &, Thermometer Maker' 1874 - 1887 and as 'Optician' 1852 - 1887. Length 12.8 cm
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Industry Science & Technology: Barometers & thermometers