Open main menu

Wikimedia Commons β

Category:Mechanical semaphores

English: Mechanical devices for communicating messages by a physical movement. Some use the same moving flags as manual semaphore, others use an alternative arrangement, often a shutter showing either black or white. For the railway signals with a moving arm, see Semaphore signals

Subcategories

This category has only the following subcategory.

S

Media in category "Mechanical semaphores"

The following 29 files are in this category, out of 29 total.