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Analog calculator
Analog calculator. 1967. You can add, can be deducted. Transactions are made of special aluminum rod. This calculator was with me always, but I have not used them, because in the analog age wanted something digital.
The process of addition is as follows. The first number is dialed by sliding from the top down sector relevant figures. For example, the number 57. Let us add the number 5: around the number 5 red dots, so it is necessary to shift up to the end. At the very top of the rod moves to the next digit, and already there is slide it down until it stops. Turned 62.
Subtraction is performed similarly, except in the lower sector.
via metkere.com
Text and photos - Alex Barhatov
Source:
The process of addition is as follows. The first number is dialed by sliding from the top down sector relevant figures. For example, the number 57. Let us add the number 5: around the number 5 red dots, so it is necessary to shift up to the end. At the very top of the rod moves to the next digit, and already there is slide it down until it stops. Turned 62.
Subtraction is performed similarly, except in the lower sector.
via metkere.com
Text and photos - Alex Barhatov
Source:
