Face mask and stop-cock from apparatus for ethyl chloride or nitrous oxide anaesthesia, English, 1866-1919 Face mask and stop-cock for anaesthetic Anaesthesiology 1866-1919
Face mask and bottle from Junker's apparatus for chloroform anaesthesia, by Krohne and Sesemann, English, 1870-1920 Face mask and bottle from Junker's apparatus for chloroform anaesthesia Anaesthesiology 1870-1920
Face mask and stopcock from "Somnoform Inhaler, No. 2, Ideal Improved", England, 1871-1920 Face mask and stopcock from "Somnoform Inhaler, No Anaesthesiology 1871-1920
Face mask and regulator from Clover's "Portable Regulating Ether Inhaler", made by Mayer and Meltzer of London, 1880-1920 Clover’s Portable Regulating Inhaler Anaesthesiology 1880-1920
Face mask from apparatus for ethyl chloride or nitrous oxide anaesthesia, English, 1866-1919 Face mask for anaesthetic Anaesthesiology 1866-1919
Part of a face mask from Clover's "Portable Regulating Ether Inhaler", celluloid, English, 1877-1930 Part of a face mask from Clover's "Portable Regula Anaesthesiology 1877-1930
Face mask and regulator from Hewitt's modification of Clover's Portable Regulating Ether Inhaler", regulator made by Holborn Surgical Instrument Co., London, 1877-1920 Face mask and regulator from Hewitt's modification Anaesthesiology 1877-1920
