Guitar tuning pegs and gyroscope: what they have in common

1. Step 1. Guitar tuning pegs — is part of — Guitar. Tensioning and tuning the strings.
2. Step 2. Guitar — has part — Strings. Six strings.
3. Step 3. Strings — is part of — Tennis racket. A string bed.
4. Step 4. Tennis racket — is made of — Carbon fibre. Modern frames.
5. Step 5. Carbon fibre — is material for — Quadcopter (drone). The frame is carbon fibre.
6. Step 6. Quadcopter (drone) — has part — Gyroscope. A MEMS gyroscope stabilizes flight.

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