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PSM V03 D428 Type and printing shaft

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Summary

Type and printing shaft

Public domain photograph related to development of telegraph, free to use, no copyright restrictions image - Picryl description

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Tags

popular science monthly illustrations unused images telegraph instruments illustrations technical diagrams science history popular science
date_range

Date

1872 - 1873
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Source

Wikimedia Commons
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Link

http://commons.wikimedia.org/
copyright

Copyright info

public domain

label_outline Explore Telegraph Instruments Illustrations, Popular Science Monthly Illustrations Unused Images, Popular Science

Topics

popular science monthly illustrations unused images telegraph instruments illustrations technical diagrams science history popular science