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Loeser's Metallic thermometer by J. G. Zimmer, 1746-47
Loeser's metallic dial thermometer, graduated according to the scale of J.N. De L'Isle, by J. G. Zimmer, Reinharz Castle, Wittenberg, Saxony-Anhalt, Germany, 1746-47.
Pocket Dial Thermometer (Bourdon-type), 19th Century
Pocket dial clinical thermometer (a Bourdon-tube type of strain thermometer) in watch-style case, 1801-1900.