Hot air balloon and smart meter: what they have in common

1. Step 1. Hot air balloon — is made of — Nylon. A light, strong envelope fabric.
2. Step 2. Nylon — is material for — Digital blood pressure monitor. The cuff is nylon.
3. Step 3. Digital blood pressure monitor — has part — Strain gauge. A pressure sensor.
4. Step 4. Strain gauge — is part of — Electronic scales. A strain gauge.
5. Step 5. Electronic scales — has part — Liquid-crystal display. The reading is on an LCD.
6. Step 6. Liquid-crystal display — is part of — Smart meter. A display.

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