What typewriter is made of

Mechanical printing of letters with keys (Sholes and Glidden).

• Keyboard — has part. The keys drive levers with type.
• Lever — has part. Each key is a system of levers.
• QWERTY layout — uses. The QWERTY layout was created for Sholes’s typewriter.
• Cast iron — is made of. The casing is cast iron.
• Steel — is made of. The type is steel.

Typewriter

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