Made in: Moscow, USSR
Materials: metal, wood
Tags: russiamakes, polytech, россияделаетсама, рдс, политех
This folding arithmometer developed by Ivan Fedorovich Kucherov perform all arithmetic operations. For addition and subtraction a fixed part of the device is used, which is a modification of Kummer's adding machine, whereas for multiplication and division involves the moving calculation tables. This invention is patented under №4448.