The Astra "Baby" Adding Machine

The Astra Adding Machine, Klasse 0 Serie 01, is nicknamed the Astra "Baby". Compared to the earlier Astra machines this is a small and light adding machine. It has a display window for the register and for the input, and has double-zero and triple-zero buttons. This one has no subtraction, though there was a version with subtraction and negative totals. The picture of the 1912 Dalton Adding, Listing and Calculating machine is taken from: https://texashistory.unt.edu/ark:/675... University of North Texas Libraries, photo credit to the Fort Bend Museum. For more information about this and other machines in my collection, please visit my website: https://www.jaapsch.net/mechcalc/ 0:00 Introduction, History 1:32 Addition 2:12 Totals 2:42 Non-add 3:00 Repeat, Multiplication 4:09 Mechanism 5:25 Outro