These stamps from the Netherlands include computer designed diagrams.
| Stamp | Description |
|---|---|
 |
Netherlands, 12c + 8c, 1970 Scott: B457 SP192 Isometric projection from circle to square |
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Netherlands, 15c + 10c, 1970 Scott: B458 SP192 Parallel Planes in a cube |
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Netherlands, 20c+10c, 1970 Scott: B459 SP192 Two overlapping scales |
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Netherlands, 25c + 10c, 1970 Scott: B460 SP192 Transition phases of concentric circles with increasing diameters |
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Netherlands, 45c + 20c, 1970 Scott: B461 SP192 Four spirals |