Weighing bowl and CNC machine: what they have in common

1. Step 1. Weighing bowl — is part of — Kitchen scale. A platform for goods.
2. Step 2. Kitchen scale — has part — Spring. The load stretches a spring.
3. Step 3. Spring — is part of — Lock and key. Springs press the pins.
4. Step 4. Lock and key — evolved into — Smart lock. An electronic lock.
5. Step 5. Smart lock — has part — Servomotor. A bolt actuator.
6. Step 6. Servomotor — is part of — CNC machine. Servo drives move the axes.

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