Description and use of a patent medical electrical machine, made by Thomas Blunt, (late Nairne and Blunt), optician and mathematical instrument maker to His Majesty, 22, Cornhill / [Thomas Blunt].

Licence: Public Domain Mark

Credit: Description and use of a patent medical electrical machine, made by Thomas Blunt, (late Nairne and Blunt), optician and mathematical instrument maker to His Majesty, 22, Cornhill / [Thomas Blunt]. Source: Wellcome Collection.