Metal rod with knob and personal computer: what they have in common

1. Step 1. Metal rod with knob — is part of — Electroscope. It conducts the charge.
2. Step 2. Electroscope — is made of — Gold. With leaves of gold leaf.
3. Step 3. Gold — is material for — Glucose meter. The strip electrodes are gold or carbon.
4. Step 4. Glucose meter — has part — Liquid-crystal display. A screen.
5. Step 5. Liquid-crystal display — is part of — Monitor. Then LCDs.
6. Step 6. Monitor — is part of — Personal computer. A monitor.

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