Telemedicine and micrometer: what they have in common

1. Step 1. Telemedicine — uses — Video call. Video consultations.
2. Step 2. Video call — uses — Smartphone camera. A camera.
3. Step 3. Smartphone camera — is part of — Quadcopter (drone). A camera.
4. Step 4. Quadcopter (drone) — has part — Propeller. Air propellers.
5. Step 5. Propeller — uses — Screw. A propeller “screws” itself into the water, like an Archimedes’ screw.
6. Step 6. Screw — is used in — Micrometer. A precise screw with a 0.5 mm pitch.

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