La pascaline Work-a-like ( Brass )

La pascaline Work-a-like ( Brass )
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This is a mid-1900s adding/subtraction device that works like the La Pascaline of 1645. They were used in my class as I taught early computing devices.
There are 3 of these devices, each made of brass.
I have other models in my TPT store.
The price is for 1 device, which includes s/h.
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