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[en] This paper reports the development and fabrication of very small Zamboni batteries. The principle of this battery type is briefly recalled, and the modifications brought to the design are described (they aim at reducing the internal resistance while maintaining some humidity in elements). Various aspects are described: preparation of the electrolyte-depolarising paper, the cutting of elements, and their assembly. Applications are briefly evoked (ionization chambers, handling operations with electrometers). Reprint of a paper published in 'L'Onde Electrique', No. 336-337, March-April 1955
[en] This note briefly presents an apparatus for the production of high vacuum benches without addition of water vapour nor modification of glass installations polluted by harmful and radioactive gases. This apparatus comprises a tube for an inert gas input, a tube for a free output of this gas, a capillary which routes the gas through a rubber tube towards the apparatus, a tube with an outer end linked to the blower, and a very thin and flexible pocket which can be easily inflated. Reprint of a paper published in 'Journal de Physique et le Radium', t. 14, Dec 1953, p. 734.