1796

1869

1/2 19th century

After studying briefly at the Ecole Polytechnique 1815-16, Collardeau du Heaume in 1821 established himself as a maker of precision instrumentation and was closely associated with Gay-Lussac for whom he realised a number of instruments and participated in his researches. Their relationship was indeed close. According to Hachette, Gay-Lussac attributed to Collardeau most of the calculations in his instructions for the use of the centesimal alcoholometer, while Collardeau acknowledged that he owed a host of manufacturing methods, which had assured the success of his business, to Gay-Lussac (1). Instruments that he initially supplied to the government at 5fr each had their price reduced under pressure to 3fr.
As a specialist maker of graduated glass instruments for physics and chemistry, he developed a pump and manometer to test and measure the resistance strength of champagne-bottles in the early 1820s; this was displayed at the 1834 exhibition. In 1838 he produced a double tube colorimeter, and the following year developed an effective portable balance.
Despite this activity, at the urging of Hachette, Collardeau had also interested himself in the slide-rule at the moment of its introduction into France. In 1820 he published a notice on the instrument which however he did not make himself, turning to Lenoir to execute them (2).
In 1849, improvements to the manometer, a twin-toothed dividing-plate, a goniograph or full circle protractor were presented to the Society for the Encouragement of National Industry (3).



3 Dupin 255; BSEIN 1849, 93, 283, 354.

1. BSEIN, xxiv, 1825, 10-11. See also the dedication to Gay-Lussac of the 1833 edition of Collardeau's manuel of the slide rule; the remarks in Gay-Lussac's instruction manuel for his instrument, 1832, and more generally Crosland, 190-2.
2. Thomas 87-8

Instruction sur la règle à calculs, 1820
Instruction sur l'usage de la règle à calculs portative à une seule coulisse…,, 1833.
Précis de l'opération du jaugeage d'un tonneau plein, Paris 1857.
'Moralité du mémoire de M. Pouillet sur les densités de l'alcool', Recueil de l'Académie des Sciences, xxx 1859. A M. le Président et à MM les Membres de l'Académie des Ciences. Signification du silence de M. Pouillet sur des questions soulevées par une critique de som mémoire académique de 16 mai 1859.
Examen des conclusions de l'Académie des Sciences sur la quetion des alcomètres, 1861.
Considérations sur la legislation des aréomètres, 1862.Origine d'un déficit annuel de plusieurs millions pour l'Etat et pour une classe de commerçants, urgence d'un contrôle des aréomètres, repression du plagiat, Paris 1864.
Question de finance, d'industrie et de morale. Contrôle des aréomètres, 1866.
Résumé de la question du contrôle des aréomètres, 1867.
Table M. Mouillage de l'alcool et des liqueurs spiritueux, 1868.

5, rue de la Cerisaie Paris (1828-1833).
17, rue de la Cerisaie Paris Almanach du Commerce; Par Indicateur 1873 12, 574
56, rue du Fbg St Martin, Paris (1834-96). Almanach des Commerçants 1838, p. 693.

1834, Paris, National, silver medal
1839, Paris, National Silver medal

1739

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