A Handbook of Practical Telegraphy

by

Write The First Customer Review
A Handbook of Practical Telegraphy - Culley, Robert Spelman
Filter Results
Shipping
Item Condition
Seller Rating
Other Options
Change Currency

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1863 Excerpt: ...reverse direction after each signal, and frequently becomes demagnetized or cross-magnetized by the discharge or return current. The receiving needle moves sluggishly, and the signals run together, so that a letter of three movements-appears like one of a single movement sent slowly. Signals through buried wires are ...

A Handbook of Practical Telegraphy (1863) 2010, Kessinger Publishing

ISBN-13: 9781164736400

Hardcover

Select