Magnifier frame with handle and industrial robot: what they have in common

1. Step 1. Magnifier frame with handle — is part of — Magnifying glass. A frame with a handle.
2. Step 2. Magnifying glass — has part — Lens. A converging lens.
3. Step 3. Lens — is part of — Endoscope. Optics.
4. Step 4. Endoscope — is part of — Surgical robot. An endoscopic camera.
5. Step 5. Surgical robot — evolved from — Industrial robot. Manipulators.

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