Diesel locomotive and camera: what they have in common

1. Step 1. Diesel locomotive — has part — Bogie. Bogies with wheelsets.
2. Step 2. Bogie — has part — Spring. Spring suspension.
3. Step 3. Spring — is part of — Shutter. A spring mechanism.
4. Step 4. Shutter — is part of — Camera. A shutter.

Open Evothings