needle telegraph
needle telegraph · needle telegraphs
A telegraph in which the signals are given by the deflections of a magnetic needle to…A telegraph in which the signals are given by the deflections of a magnetic needle to the right or to the left of a certain position.
Meaning
1 sensesA telegraph in which the signals are given by the deflections of a magnetic needle to the right or to the left of a certain position.
Forms
plural: needle telegraphs| Singular | needle telegraph |
|---|---|
| Plural | needle telegraphs |
regular