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Rolling Disc Planimeter
| Marking: | G. Coradi Zürich |
| Serial Number: | 213 |
| Year: | 1886 |
| Size: | 32 x 17 x 8 cm |
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Freely Suspended Polar Disc Planimeter
| Marking: | G. Coradi Zürich |
| Serial Number: | 254 |
| Year: | 1886 |
| Size: | 41 x 22 x 9.5 cm |
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Rolling Sphere Planimeter
| Marking: | G. Coradi Zürich |
| Serial Number: | 537 |
| Year: | 1890 |
| Size: | 33.5 x 22.5 x 9 cm |
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Polar Sphere Planimeter
| Marking: | G. Coradi Zürich |
| Serial Number: | 663 |
| Year: | 1891 |
| Size: | 38 x 24 x 9 cm |
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Polar Disc Planimeter
| Marking: | G. Coradi Zürich |
| Serial Number: | 1067 |
| Year: | 1896 |
| Size: | 41 x 21.5 x 9.5 cm |
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