key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed
telegraph key in 30 Seconds
- (noun) key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed
Meanings
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1
noun key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed
Summary
key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed
- (noun) key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed
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