5 assorted pieces, spare parts and trial pieces from Charles Babbage's difference engine
Piece, one of five, of struck ruby gold glass
Piece, one of five, of struck ruby gold glass
Swatch of Arnica from homeopathic medicine chest
1880-1910
24 assorted pieces, spare parts and trial pieces from Charles Babbage's difference engine
Swatch of Arnica from homeopathic medicine chest
1880-1910
Swatch of calendula from homeopathic medicine chest
1880-1910
Five pieces of struck ruby gold glass, 1968.
Tourmaline pieces set in a circular brass mount for use with a polariscope
5 additional metal pieces from the model of the boiler of the HMS 'Thunderer'
1876-1925