Measuring cylinder and car: what they have in common

1. Step 1. Measuring cylinder — is part of — Rain gauge. It measures volume.
2. Step 2. Rain gauge — is part of — Weather station. A rain gauge.
3. Step 3. Weather station — uses — Euclidean geometry. Instruments are set up on a site according to a standard.
4. Step 4. Euclidean geometry — is used in — Armillary sphere. The rings model the celestial circles.
5. Step 5. Armillary sphere — has part — Axle. The celestial axis.
6. Step 6. Axle — is part of — Car. A car's wheels sit on axles.

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