Glass Gay-Lussac hydrometer (densimeter), range 1040-1100, with trial jar and in metal case with a French label describing the hydrometer as 'La Trousse Pomologique', made by F. Besnard, 28 rue Geoffroy-l'Asnier, Paris, c. 1871-1900.
Glass Gay-Lussac hydrometer (densimeter), range 1040-1100, with trial jar and in metal case with a French label describing the hydrometer as 'La Trousse Pomologique', made by F. Besnard, 28 rue Geoffroy-l'Asnier, Paris, c. 1871-1900.