Diagram of the Lanchester speaker

Diagram of the Lanchester speaker
Diagram of the Lanchester speaker "Sp.Sen" (rolling ring centering)

Image Details

Title Diagram of the Lanchester speaker
Creator Unknown
Date of Creation c.1910
Description Diagram of the Lanchester speaker "Sp.Sen" (rolling ring centering)
Archive Reference LAN/2/15/1
Media Lantern slide
Dimensions N/A