Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 832
, but on somewhat APPENDIX. 70 shorter circuits ; until lately was the size most largely used in this country. Nos. 10, 11.For shorter circuits, railway telegraphs, private lines, police and fire-alarm lines, etc.No. 13. For telephone lines, police and fire-alarm lines, etc. Nos. 13, 14. For…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-674-397.webp)
