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A vino-colorimètre, an apparatus to determine the colour quality of red wine, by Jules Salleron (1829-1897). Salleron was a maker of precision instruments, based in Paris, on 24 Rue Pavée-au-Marais. Included in the vino-colorimètre is a scale used to compare against samples of red wine, with ten varying shades of red to violet red, based on French chemist Michel Eugène Chevreul’s (1786-1889) system of classifying and identifying colours. Also includes a French, second edition instruction manual (dated 1885) for using the instrument, with a list of other apparatus for sale; and a viewing cone to block out exterior light.
Spectrum tube used by Sir William Ramsay
Spectrum tube used by Sir William Ramsay, containing helium from cleveite, January 1899.
Boiling point apparatus used by Ramsay and Young
Boiling paint apparatus used by Ramsay and Young, relating to Sir William Ramsay's early researches
Electromagnetic Rotation Apparatus, 1828
Apparatus to demonstrate magnetic poles rotating round current- carrying conductors, supplied by Watkins and Hill in 1828 for £2-12-6
Glass tube with stand
Glass tube with stand, part of Hope's water-density apparatus by Hachette and Co., Paris, France, 1857.