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| A view into the calculator (actually another model): it contains only the 10 rods and the zero handle. The picture shows the rods in zero position. The flat rails guide the rods. | |
| Total images: 9 | Help | |
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| A view into the calculator (actually another model): it contains only the 10 rods and the zero handle. The picture shows the rods in zero position. The flat rails guide the rods. | |
| Total images: 9 | Help | |