English: The Beaver is a very rare adding machine that was made in Japan in 1964. It was exported and sold by Ito-Ya Ltd., a stationery supplies company. More info: https://www.jaapsch.net/mechcalc/beaver.htm
For more information on this and other calculating machines in my collection, please visit my website:
https://www.jaapsch.net/mechcalc/
0:00 Introduction
0:28 History
1:44 Addition
2:42 Subtraction
4:25 Clearing
4:48 Complementary numbers
5:48 Opening case
8:35 Mechanism
11:02 Outro
Українська: Лічильна машина «Бобер», виготовлена японською компанією «Itoya» в 1960-х роках.