Press frame and telephone: what they have in common

1. Step 1. Press frame — is part of — Screw press. A rigid frame.
2. Step 2. Screw press — is part of — Gutenberg printing press. Gutenberg adapted the screw press known from pressing grapes.
3. Step 3. Gutenberg printing press — uses — Paper. The impression is made on paper.
4. Step 4. Paper — is material for — Loudspeaker. The cone is paper.
5. Step 5. Loudspeaker — is part of — Telephone. The earpiece reproduces the other person’s voice.

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