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Adix was patented by the Austrian inventor Joseph Pallweber in 1904. It was manufactured by the Adix Company in Manheim between 1904-1930. This small device which measures 15 x 10 x 3 cm and weighs only 250 gr. can only add single digit numbers. In spite of its limited functionality its was considered as a status symbol thanks to its elegant design and grained leather brown wooden case with velvet interior. It is also the first computing device containing aluminum parts. References:
Nathan Zeldes’s History of Computing
Bob’s Calculators and Slide Rules
