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PrintablesSignore Galilei
Modular Mechanical Calculator
This mechanical calculator automatically carries addition and subtraction operations. The long mark on the read gear indicates the number that each digit is displaying. To add (e.g.) 43+19, you would first move the 1's gear to 3 and the…
- Pobrania
- 25
- Polubienia
- 2
- Ocena
- 0
