Alcohol meter van Dujardin-Salleron.
An Alcohol meter by Dujardin-Salleron in original case. In the sheath are a late 19th century glass test tube by Dujardin, three autographed alcohol meters and a thermometer. In addition in the case a catalogue,Â pricelist and a table of Dujardin Salleron-Paris. Dimensions 18 x 34 x 6.5 cm.